Peptide Graded

Every peptide, graded on the evidence.

152 compounds, from approved drugs to grey-market vials. Each one says what it is sold for, what the published studies support, and where the FDA stands as of 2026-10-27.

How to read a grade

  • AProperly tested in people 64
  • BPartly tested in people 43
  • CNot properly tested in people 40
  • DNot tested at all 5
Nervous system: 13Circulation: 14Skin: 28Gut and weight: 35Hormones: 19Immunity: 9Reproduction: 13Muscle and bone: 21

All peptides 152

  1. 5-Amino-1MQSmall-molecule NNMT inhibitorNot approved
    CAnimal and cell studies
    Human
    00
    Animal
    02
    Sources
    09
    Route
    Oral

    Sold for

    Sold as a pill to burn fat and keep muscle.

    Studies say

    Two mouse studies show less fat. No human studies exist.

    Gut and weight
  2. AbaloparatidePTHrP analogFDA approved
    AStrong human evidence
    Human
    02
    Animal
    00
    Sources
    08
    Route
    Injection

    Sold for

    A daily injection that builds bone in people with weak, thinning bones.

    Studies say

    Fewer broken bones: 0.58% had new spine breaks versus 4.22% on a dummy shot.

    Muscle and bone
  3. Acetyl hexapeptide-8Neurotransmitter-inhibiting peptideCosmetic ingredient
    BSome human evidence
    Human
    05
    Animal
    04
    Sources
    17
    Route
    Topical

    Sold for

    Cream or serum sold as a Botox alternative for expression lines.

    Studies say

    Mixed: one trial of 60 adults saw fewer wrinkles, another of 19 women saw no clear change.

    Skin
  4. Acetyl octapeptide-3Neurotransmitter-inhibiting peptideCosmetic ingredient
    CAnimal and cell studies
    Human
    01
    Animal
    00
    Sources
    04
    Route
    Topical

    Sold for

    Sold as a stronger version of Argireline to relax lines on the eyes and forehead.

    Studies say

    One 24-person study of a patch with other ingredients. Too little to show it works alone.

    Skin
  5. Acetyl tetrapeptide-5Signal peptideCosmetic ingredient
    DNo meaningful data
    Human
    00
    Animal
    00
    Sources
    04
    Route
    Topical

    Sold for

    Put in eye creams to reduce puffy bags under the eyes.

    Studies say

    No published study shows an effect. The only data come from the maker.

    Skin
  6. AfamelanotideMC1R agonistFDA approved
    AStrong human evidence
    Human
    03
    Animal
    00
    Sources
    09
    Route
    Implant

    Sold for

    An implant for a rare sunlight-pain disease; also pitched as a sunless tan.

    Studies say

    More pain-free time in sunlight in 168 adults. No trials back tanning.

    Skin
  7. AlbiglutideGLP-1 receptor agonistFDA approved
    AStrong human evidence
    Human
    02
    Animal
    00
    Sources
    03
    Route
    Injection

    Sold for

    Weekly diabetes shot that was later taken off the market.

    Studies say

    Large trials: lowered blood sugar, and fewer heart attacks and strokes (7% vs 9% on placebo).

    Hormones
  8. AmycretinAmylin + GLP-1 co-agonistIn clinical trials
    BSome human evidence
    Human
    03
    Animal
    00
    Sources
    05
    Route
    Several routes

    Sold for

    Seen as the next weight-loss drug from Novo Nordisk, as a pill or weekly shot.

    Studies say

    Large weight loss in early trials of up to 36 weeks, but small trials and many dropouts.

    Gut and weight
  9. Angiotensin IIVasopressor peptideFDA approved
    AStrong human evidence
    Human
    01
    Animal
    00
    Sources
    05
    Route
    Intravenous

    Sold for

    A hospital drug to raise blood pressure in patients in shock.

    Studies say

    In 344 patients it raised blood pressure, but did not clearly help them live longer.

    Circulation
  10. AOD-9604GH fragment (lipolytic)Not approved
    CAnimal and cell studies
    Human
    00
    Animal
    02
    Sources
    11
    Route
    Injection

    Sold for

    Sold online to burn fat without the other effects of growth hormone.

    Studies say

    No weight loss in the one big human trial. The fat-burning claim rests on mouse studies.

    Gut and weight
  11. ApraglutideGLP-2 analogIn clinical trials
    BSome human evidence
    Human
    02
    Animal
    00
    Sources
    03
    Route
    Injection

    Sold for

    Weekly shot for people with short bowel syndrome who need feeding through a vein.

    Studies say

    One trial of 163 adults: 25.5% less IV feeding vs 12.5% on placebo; clearer in people with a stoma.

    Gut and weight
  12. AviptadilVasoactive intestinal peptideIn clinical trials
    BSome human evidence
    Human
    01
    Animal
    03
    Sources
    11
    Route
    Intravenous

    Sold for

    Promoted in 2020 and 2021 as a rescue treatment for COVID-19 lung failure.

    Studies say

    No benefit in a trial of about 460 very sick COVID-19 patients. No better recovery or survival.

    Immunity
  13. BacitracinPolypeptide antibioticFDA approved
    BSome human evidence
    Human
    01
    Animal
    00
    Sources
    05
    Route
    Topical

    Sold for

    An antibiotic ointment put on cuts and scrapes to stop infection.

    Studies say

    In 922 patients, infection rates matched plain petroleum jelly. A few had allergic reactions.

    Skin
  14. BalixafortideCXCR4 antagonist peptideIn clinical trials
    BSome human evidence
    Human
    02
    Animal
    00
    Sources
    04
    Route
    Intravenous

    Sold for

    A drug meant to make chemotherapy work better against breast cancer.

    Studies say

    No benefit. A trial of 432 patients found no gain from adding it to chemotherapy.

    Circulation
  15. BivalirudinDirect thrombin inhibitorFDA approved
    AStrong human evidence
    Human
    01
    Animal
    00
    Sources
    04
    Route
    Intravenous

    Sold for

    Hospital blood thinner given during heart procedures such as stenting.

    Studies say

    In 3,602 heart attack patients: less major bleeding (4.9% vs 8.3%), but more early stent clots.

    Circulation
  16. BPC-157Synthetic pentadecapeptide (gastric-derived)Not approved
    CAnimal and cell studies
    Human
    01
    Animal
    35
    Sources
    14
    Route
    Several routes

    Sold for

    Sold as a healing shot or pill for tendons, ligaments, muscle and gut.

    Studies say

    Faster healing in rats, mostly from one lab. The only human data is 12 patients, with no comparison group.

    Gut and weight
  17. BremelanotideMC4R agonistFDA approved
    BSome human evidence
    Human
    02
    Animal
    00
    Sources
    05
    Route
    Injection

    Sold for

    An injection for women with low sexual desire; also sold online as PT-141.

    Studies say

    In 1,267 women, small gains on questionnaires. No rise in satisfying sex. Nausea in about 40%.

    Nervous system
  18. BrilacidinDefensin-mimetic host-defense peptideIn clinical trials
    CAnimal and cell studies
    Human
    00
    Animal
    02
    Sources
    03
    Route
    Several routes

    Sold for

    A lab-made drug meant to kill resistant germs and block the COVID virus.

    Studies say

    Works in lab dishes. No published human trial exists for any use.

    Gut and weight
  19. CagrilintideLong-acting amylin analogIn clinical trials
    BSome human evidence
    Human
    05
    Animal
    00
    Sources
    15
    Route
    Injection

    Sold for

    Weekly weight-loss shot, mostly tested together with semaglutide.

    Studies say

    Alone: about 6% to 11% weight loss at 26 weeks. With semaglutide: about 20% at 68 weeks.

    Gut and weight
  20. CagriSemaAmylin + GLP-1 combinationIn clinical trials
    AStrong human evidence
    Human
    04
    Animal
    00
    Sources
    12
    Route
    Injection

    Sold for

    A weekly shot combining two hormones, hoped to beat tirzepatide for weight loss.

    Studies say

    About 20% weight loss over 68 weeks versus 3% on placebo. It missed its goal against tirzepatide.

    Gut and weight
  21. Calcitonin-salmonCalcitonin receptor agonistFDA approved
    BSome human evidence
    Human
    01
    Animal
    00
    Sources
    06
    Route
    Several routes

    Sold for

    An older hormone drug for weak bones, bone pain and bone disease.

    Studies say

    One trial showed fewer spine breaks at only one dose. The FDA label says the benefit is not proven.

    Muscle and bone
  22. CarnosineAntioxidant dipeptideCosmetic ingredient
    CAnimal and cell studies
    Human
    01
    Animal
    02
    Sources
    03
    Route
    Topical

    Sold for

    A skin cream ingredient sold to guard against sun damage and aging.

    Studies say

    It helped in lab-grown skin samples. No trial shows a visible benefit on people.

    Skin
  23. CerebrolysinNeuropeptide preparation (porcine brain)Not approved
    BSome human evidence
    Human
    09
    Animal
    03
    Sources
    09
    Route
    Intravenous

    Sold for

    Brain injection promoted for stroke recovery, memory and dementia.

    Studies say

    Mixed: a review of six trials (1,501 people) found no fewer deaths and more serious side effects.

    Nervous system
  24. CetrorelixGnRH antagonistFDA approved
    AStrong human evidence
    Human
    02
    Animal
    00
    Sources
    04
    Route
    Injection

    Sold for

    A routine IVF shot that stops hormone surges, so eggs are not released too early.

    Studies say

    Gives the same live-birth rate as older IVF drugs, with fewer cases of ovary overstimulation.

    Reproduction
  25. CJC-1295GHRH analog (secretagogue)Not approved
    BSome human evidence
    Human
    03
    Animal
    01
    Sources
    08
    Route
    Injection

    Sold for

    Sold as an injection to build muscle, burn fat and speed recovery.

    Studies say

    It raises growth hormone for days in small trials. No study shows muscle or fat change.

    Muscle and bone
  26. Copper tripeptide-1Carrier/copper peptideCosmetic ingredient
    CAnimal and cell studies
    Human
    01
    Animal
    03
    Sources
    05
    Route
    Topical

    Sold for

    Sold in serums to build collagen, firm skin, soften wrinkles and regrow hair.

    Studies say

    Lab and animal studies look promising, but the one controlled human trial found no skin benefit.

    Skin
  27. CorticotropinMelanocortin / ACTHFDA approved
    BSome human evidence
    Human
    01
    Animal
    00
    Sources
    04
    Route
    Injection

    Sold for

    A very expensive old hormone injection, used for baby seizures and MS flare-ups.

    Studies say

    In 29 babies it stopped seizures in 87%, versus 29% on a steroid. Other uses rest on old reports.

    Hormones
  28. CosyntropinACTH(1-24) analogFDA approved
    AStrong human evidence
    Human
    01
    Animal
    00
    Sources
    02
    Route
    Injection

    Sold for

    A test drug that checks whether the adrenal glands are working properly.

    Studies say

    The test works well at spotting adrenal failure, based on 679 patients across 13 studies.

    Hormones
  29. CyclosporineCyclic peptide immunosuppressantFDA approved
    AStrong human evidence
    Human
    01
    Animal
    00
    Sources
    04
    Route
    Several routes

    Sold for

    Drug that stops the body rejecting a transplanted organ.

    Studies say

    In 209 kidney recipients, 80% of transplants survived one year, against 64% on older treatment.

    Immunity
  30. Dalbavancin / Oritavancin / TelavancinLipoglycopeptide antibioticsFDA approved
    AStrong human evidence
    Human
    01
    Animal
    00
    Sources
    04
    Route
    Intravenous

    Sold for

    Antibiotics for skin infections, two of which need only one or two doses.

    Studies say

    As good as vancomycin for skin infections. One trial of 1,312 patients gave 79.7% against 79.8%.

    Skin
  31. DaptomycinCyclic lipopeptide antibioticFDA approved
    AStrong human evidence
    Human
    02
    Animal
    00
    Sources
    03
    Route
    Intravenous

    Sold for

    A hospital antibiotic for serious bacterial infections of the skin and blood.

    Studies say

    In 246 patients it cured staph blood infections as often as standard drugs, with less kidney harm.

    Skin
  32. DasiglucagonGlucagon analogFDA approved
    AStrong human evidence
    Human
    01
    Animal
    00
    Sources
    02
    Route
    Injection

    Sold for

    An emergency pen that treats dangerously low blood sugar in diabetes.

    Studies say

    It raised blood sugar in 10 minutes, as fast as older kits, in 170 adults.

    Gut and weight
  33. DavunetideNeuroprotective peptideIn clinical trials
    BSome human evidence
    Human
    01
    Animal
    01
    Sources
    03
    Route
    Nasal

    Sold for

    Nasal spray promoted to protect brain cells and help memory.

    Studies say

    One trial of 313 people: no better than placebo after a year.

    Nervous system
  34. DegarelixGnRH antagonistFDA approved
    AStrong human evidence
    Human
    01
    Animal
    00
    Sources
    03
    Route
    Injection

    Sold for

    A prostate cancer shot that lowers testosterone within days, without an early spike.

    Studies say

    As good as leuprolide at lowering testosterone over a year, and faster, in 610 men.

    Reproduction
  35. DesirudinDirect thrombin inhibitorFDA approved
    AStrong human evidence
    Human
    02
    Animal
    00
    Sources
    03
    Route
    Injection

    Sold for

    A blood thinner given after hip replacement surgery to prevent leg clots.

    Studies say

    In 2,079 patients it caused fewer clots than enoxaparin, with similar bleeding.

    Circulation
  36. DesmopressinVasopressin V2 analogFDA approved
    AStrong human evidence
    Human
    00
    Animal
    00
    Sources
    04
    Route
    Several routes

    Sold for

    Approved for excess urine, bleeding disorders and bedwetting; also claimed to boost memory.

    Studies say

    Works for its approved uses. The memory claim has no support. Low blood salt is the main danger.

    Circulation
  37. DifelikefalinKappa-opioid agonist peptideFDA approved
    AStrong human evidence
    Human
    01
    Animal
    00
    Sources
    02
    Route
    Intravenous

    Sold for

    Drug for the itching that comes with kidney dialysis.

    Studies say

    Itch fell a lot for 52% on the drug vs 31% on placebo in 378 dialysis patients.

    Skin
  38. DihexaAngiotensin IV-derived peptideNot approved
    CAnimal and cell studies
    Human
    00
    Animal
    04
    Sources
    11
    Route
    Oral

    Sold for

    Sold online as a memory booster claimed to grow new brain connections.

    Studies say

    Helped memory in a few rodent studies. Two were withdrawn. No human data at all.

    Nervous system
  39. Dipeptide diaminobutyroyl benzylamide diacetateNeuromuscular-relaxing peptideCosmetic ingredient
    DNo meaningful data
    Human
    01
    Animal
    00
    Sources
    04
    Route
    Topical

    Sold for

    Put in face creams to smooth wrinkles, like a muscle-relaxing injection.

    Studies say

    The only human data come from the maker and a mixed-product study. No independent trial.

    Skin
  40. DSIPNeuromodulatory nonapeptideNot approved
    CAnimal and cell studies
    Human
    04
    Animal
    01
    Sources
    07
    Route
    Injection

    Sold for

    Sold online as a natural peptide for deeper sleep, pain and withdrawal.

    Studies say

    Weak effect at best, in small old studies. The best trial had only 16 people.

    Nervous system
  41. DulaglutideGLP-1 receptor agonistFDA approved
    AStrong human evidence
    Human
    03
    Animal
    00
    Sources
    04
    Route
    Injection

    Sold for

    Weekly shot that lowers blood sugar and protects the heart.

    Studies say

    Large trials: lower blood sugar; 12% lower risk of heart attack, stroke or heart death in 9,901 people.

    Hormones
  42. EcallantidePlasma kallikrein inhibitorFDA approved
    AStrong human evidence
    Human
    01
    Animal
    00
    Sources
    02
    Route
    Injection

    Sold for

    A shot that stops the swelling attacks of hereditary angioedema.

    Studies say

    Relieved attacks faster than placebo in two trials. About 4% had a severe allergic reaction.

    Skin
  43. EchinocandinsLipopeptide antifungalsFDA approved
    AStrong human evidence
    Human
    02
    Animal
    00
    Sources
    03
    Route
    Intravenous

    Sold for

    Hospital drugs for serious yeast infections in the blood and body.

    Studies say

    In trials of 224 and 245 patients, they worked at least as well as older drugs.

    Circulation
  44. EfpeglenatideLong-acting GLP-1 agonistIn clinical trials
    BSome human evidence
    Human
    01
    Animal
    00
    Sources
    04
    Route
    Injection

    Sold for

    A weekly diabetes injection that was shelved for business reasons.

    Studies say

    Fewer heart attacks and strokes: 7.0% versus 9.2% on a dummy shot, in 4,076 people.

    Hormones
  45. ElamipretideMitochondria-targeting tetrapeptideFDA approved
    BSome human evidence
    Human
    03
    Animal
    00
    Sources
    04
    Route
    Injection

    Sold for

    Drug for energy and muscle problems tied to the cell's power plants.

    Studies say

    A 12-person trial missed its main goals; a larger trial in 218 people with another condition also failed.

    Hormones
  46. EnfuvirtideHIV fusion inhibitor peptideFDA approved
    AStrong human evidence
    Human
    01
    Animal
    00
    Sources
    02
    Route
    Injection

    Sold for

    A twice-daily HIV shot for people whose virus had resisted other drugs.

    Studies say

    Lowered the amount of virus in two trials of people with resistant HIV. Newer drugs have replaced it.

    Immunity
  47. EnlicitideOral macrocyclic PCSK9 inhibitor peptideFDA approved
    AStrong human evidence
    Human
    02
    Animal
    00
    Sources
    05
    Route
    Oral

    Sold for

    A daily pill that lowers LDL (bad) cholesterol.

    Studies say

    Large trials show LDL cut by 56 to 59%. Effect on heart attacks is not known yet.

    Gut and weight
  48. EpitalonPineal tetrapeptide (Ala-Glu-Asp-Gly)Not approved
    CAnimal and cell studies
    Human
    01
    Animal
    03
    Sources
    11
    Route
    Injection

    Sold for

    Sold online as an anti-aging peptide that lengthens life.

    Studies say

    Animal and lab studies from one research group. No proper human trial of epitalon itself.

    Nervous system
  49. EptifibatideGPIIb/IIIa inhibitorFDA approved
    AStrong human evidence
    Human
    01
    Animal
    01
    Sources
    03
    Route
    Intravenous

    Sold for

    Hospital drug that stops blood clots during heart attacks and stenting.

    Studies say

    In 10,948 people: death or heart attack in 14.2% vs 15.7% on placebo, with more bleeding.

    Circulation
  50. EtelcalcetideCalcimimetic peptideFDA approved
    AStrong human evidence
    Human
    01
    Animal
    00
    Sources
    02
    Route
    Intravenous

    Sold for

    A dialysis drug that lowers parathyroid hormone without pills.

    Studies say

    Lowered parathyroid hormone more than placebo and more than the pill cinacalcet in three trials.

    Muscle and bone
  51. ExenatideGLP-1 receptor agonistFDA approved
    AStrong human evidence
    Human
    02
    Animal
    00
    Sources
    08
    Route
    Injection

    Sold for

    A diabetes injection first made from lizard venom; some use it for weight loss.

    Studies say

    Trials support it for type 2 diabetes. For weight loss it works only a little.

    Hormones
  52. Follistatin-344Myostatin-inhibiting peptideNot approved
    CAnimal and cell studies
    Human
    02
    Animal
    01
    Sources
    06
    Route
    Injection

    Sold for

    Sold to bodybuilders as a way to grow muscle beyond natural limits.

    Studies say

    Only two six-patient gene therapy studies. The injectable protein has never been tested in people.

    Muscle and bone
  53. Fragment 176-191GH C-terminal fragmentNot approved
    CAnimal and cell studies
    Human
    00
    Animal
    03
    Sources
    05
    Route
    Injection

    Sold for

    Injection sold as a fat burner taken from part of growth hormone.

    Studies say

    Helped rodents lose fat. Human trials of the same molecule failed to cause weight loss.

    Gut and weight
  54. Ga-68 dotatateSSTR imaging radiopeptideFDA approved
    BSome human evidence
    Human
    01
    Animal
    00
    Sources
    02
    Route
    Intravenous

    Sold for

    A scan that finds neuroendocrine tumors the older scan missed.

    Studies say

    More accurate than the older scan in 78 patients, and it changed treatment plans in 36%.

    Gut and weight
  55. GanirelixGnRH antagonistFDA approved
    AStrong human evidence
    Human
    01
    Animal
    00
    Sources
    04
    Route
    Injection

    Sold for

    An IVF injection that stops eggs releasing before they are collected.

    Studies say

    In 313 women, pregnancy rates were similar to the older method, with fewer injections.

    Reproduction
  56. GHK-CuCopper-binding tripeptideNot approved
    CAnimal and cell studies
    Human
    00
    Animal
    08
    Sources
    18
    Route
    Several routes

    Sold for

    Sold in skin creams and injections for wrinkles, thinning hair and healing.

    Studies say

    Helps rat wounds heal. No proper human trial exists for skin or hair.

    Skin
  57. GHRP-2GHRP / ghrelin agonistNot approved
    CAnimal and cell studies
    Human
    03
    Animal
    00
    Sources
    03
    Route
    Injection

    Sold for

    Injection sold to boost growth hormone for muscle, fat loss and recovery.

    Studies say

    It raises growth hormone briefly, but the effect fades and no trial measured muscle or fat.

    Muscle and bone
  58. GHRP-6GHRP / ghrelin agonistNot approved
    CAnimal and cell studies
    Human
    01
    Animal
    01
    Sources
    03
    Route
    Injection

    Sold for

    Sold to raise growth hormone for muscle, fat loss and injury recovery.

    Studies say

    Raised growth hormone in nine healthy men. Nothing tested for muscle, fat or healing in people.

    Muscle and bone
  59. GlepaglutideGLP-2 analogIn clinical trials
    BSome human evidence
    Human
    02
    Animal
    00
    Sources
    02
    Route
    Injection

    Sold for

    A gut-growth injection being tested for people on drip feeding.

    Studies say

    In 106 patients it cut drip feeding at one dosing schedule, not the other.

    Gut and weight
  60. GlucagonGlucagon receptor agonistFDA approved
    AStrong human evidence
    Human
    01
    Animal
    00
    Sources
    05
    Route
    Several routes

    Sold for

    An emergency treatment for dangerously low blood sugar in people on insulin.

    Studies say

    Nose powder and ready pens raise blood sugar as well as the injected kit.

    Gut and weight
  61. GlutathioneAntioxidant tripeptideNot approved
    BSome human evidence
    Human
    04
    Animal
    00
    Sources
    05
    Route
    Several routes

    Sold for

    Antioxidant sold for skin lightening, detox and Parkinson's.

    Studies say

    Small skin-lightening effect at 2 of 6 sites in 60 students; trials in lung and brain disease failed.

    Skin
  62. Gonadorelin (compounded)GnRH (native)Not approved
    CAnimal and cell studies
    Human
    01
    Animal
    00
    Sources
    03
    Route
    Injection

    Sold for

    Given to men on testosterone to prevent shrinking testicles and keep fertility.

    Studies say

    No trial has tested it for this. Evidence comes from men with a different condition.

    Reproduction
  63. GoserelinGnRH agonistFDA approved
    AStrong human evidence
    Human
    01
    Animal
    00
    Sources
    02
    Route
    Implant

    Sold for

    An implant that lowers sex hormones, used for prostate and breast cancer and endometriosis.

    Studies say

    Lowers sex hormones. In 1,640 women it matched chemotherapy for survival in some breast cancers.

    Reproduction
  64. Hexapeptide-9Signal peptideCosmetic ingredient
    CAnimal and cell studies
    Human
    02
    Animal
    01
    Sources
    04
    Route
    Topical

    Sold for

    Put in anti-ageing serums to smooth wrinkles.

    Studies say

    The one controlled trial tested a changed version and was run by the maker.

    Skin
  65. HexarelinGHRP / ghrelin agonistNot approved
    CAnimal and cell studies
    Human
    01
    Animal
    01
    Sources
    03
    Route
    Injection

    Sold for

    Sold to build muscle and protect the heart by raising growth hormone.

    Studies say

    It raises growth hormone and also stress hormone. Heart benefits are shown only in animals.

    Muscle and bone
  66. HistrelinGnRH agonistFDA approved
    BSome human evidence
    Human
    01
    Animal
    00
    Sources
    03
    Route
    Implant

    Sold for

    Yearly implant that pauses puberty that starts too early.

    Studies say

    In 36 children, puberty hormones stayed suppressed in all of them for 12 months.

    Reproduction
  67. Human chorionic gonadotropinGlycoprotein gonadotropinFDA approved
    AStrong human evidence
    Human
    03
    Animal
    00
    Sources
    05
    Route
    Injection

    Sold for

    Used to trigger ovulation and treat low testosterone, and sold illegally for weight loss.

    Studies say

    Trials support ovulation and low testosterone. No trial supports weight loss, and the FDA has said so.

    Reproduction
  68. HumaninMitochondrial-derived peptideNot approved
    CAnimal and cell studies
    Human
    03
    Animal
    04
    Sources
    13
    Route
    Injection

    Sold for

    Sold as an injection for longevity, brain health and blood sugar.

    Studies say

    It helps nerve cells and insulin in animals. It has never been tested in people.

    Hormones
  69. IcatibantBradykinin B2 antagonistFDA approved
    AStrong human evidence
    Human
    01
    Animal
    00
    Sources
    02
    Route
    Injection

    Sold for

    An injection people carry to stop swelling attacks from hereditary angioedema.

    Studies say

    It cut time to relief from about 20 hours to 2 hours in 88 adults.

    Skin
  70. IGF-1 DESIGF-1 analogNot approved
    CAnimal and cell studies
    Human
    00
    Animal
    02
    Sources
    03
    Route
    Injection

    Sold for

    Injection sold for fast muscle growth where it is injected.

    Studies say

    Stronger than normal IGF-1 in a dish. No human studies exist.

    Muscle and bone
  71. IGF-1 LR3IGF-1 analogNot approved
    CAnimal and cell studies
    Human
    00
    Animal
    01
    Sources
    03
    Route
    Injection

    Sold for

    Sold as a long-lasting growth factor for muscle gain and fat loss.

    Studies say

    Works on cells in a dish. It has never been studied in people.

    Muscle and bone
  72. Insulin analogsInsulin receptor agonistFDA approved
    AStrong human evidence
    Human
    01
    Animal
    00
    Sources
    03
    Route
    Injection

    Sold for

    Changed versions of insulin that act faster or last longer.

    Studies say

    They control blood sugar as well as older insulin, with fewer night-time lows.

    Hormones
  73. IpamorelinGHRP / ghrelin receptor agonistNot approved
    CAnimal and cell studies
    Human
    03
    Animal
    02
    Sources
    11
    Route
    Injection

    Sold for

    Sold online for anti-aging, fat loss and muscle, often with another peptide.

    Studies say

    Raises growth hormone, but no study shows muscle, fat or aging benefits. The one outcome trial failed.

    Muscle and bone
  74. Kisspeptin-10Reproductive peptideNot approved
    BSome human evidence
    Human
    04
    Animal
    00
    Sources
    06
    Route
    Intravenous

    Sold for

    Injection sold to raise sex drive and testosterone.

    Studies say

    Small trials raised sex hormones and sexual brain responses; the largest had 32 men.

    Reproduction
  75. KPVAnti-inflammatory tripeptideNot approved
    CAnimal and cell studies
    Human
    00
    Animal
    02
    Sources
    04
    Route
    Several routes

    Sold for

    Sold online to calm inflammation in the gut and skin.

    Studies say

    Eased gut inflammation in mice. No human data at all.

    Gut and weight
  76. LanreotideSomatostatin analogFDA approved
    AStrong human evidence
    Human
    01
    Animal
    00
    Sources
    02
    Route
    Injection

    Sold for

    A monthly injection for a hormone illness and some slow-growing tumors.

    Studies say

    In 204 patients it slowed tumor growth. It also lowers growth hormone in acromegaly.

    Gut and weight
  77. Larazotide acetateZonulin antagonist (tight-junction regulator)In clinical trials
    BSome human evidence
    Human
    02
    Animal
    00
    Sources
    03
    Route
    Oral

    Sold for

    A pill meant to help people with celiac disease handle small amounts of gluten.

    Studies say

    Mixed results in 626 patients. The last big trial was stopped because it was unlikely to work.

    Gut and weight
  78. LeuprolideGnRH agonistFDA approved
    AStrong human evidence
    Human
    01
    Animal
    00
    Sources
    03
    Route
    Injection

    Sold for

    Hormone-blocking drug for prostate cancer and puberty that starts too early.

    Studies say

    Decades of trials support its approved uses; one trial of 84 children tested puberty doses.

    Reproduction
  79. LinaclotideGuanylate cyclase-C agonistFDA approved
    AStrong human evidence
    Human
    01
    Animal
    00
    Sources
    02
    Route
    Oral

    Sold for

    A prescription capsule for constipation and irritable bowel syndrome with constipation.

    Studies say

    Beat placebo in several large trials, including one of 804 people over 26 weeks.

    Gut and weight
  80. LiraglutideGLP-1 receptor agonistFDA approved
    AStrong human evidence
    Human
    03
    Animal
    00
    Sources
    07
    Route
    Injection

    Sold for

    A daily injection for diabetes and weight loss.

    Studies say

    In 3,731 adults it gave about 8% weight loss. In 9,340 patients it cut heart problems.

    Gut and weight
  81. LixisenatideGLP-1 receptor agonistFDA approved
    AStrong human evidence
    Human
    01
    Animal
    00
    Sources
    03
    Route
    Injection

    Sold for

    A shorter-acting diabetes drug, now sold only combined with insulin.

    Studies say

    It lowers blood sugar. In 6,068 people it neither helped nor harmed the heart.

    Hormones
  82. LL-37Host-defense antimicrobial peptideNot approved
    CAnimal and cell studies
    Human
    06
    Animal
    06
    Sources
    16
    Route
    Injection

    Sold for

    Injection sold as a natural antibiotic that heals wounds.

    Studies say

    Two small trials on skin sores had mixed results; no human data on injecting it.

    Immunity
  83. LTX-315Oncolytic peptideIn clinical trials
    CAnimal and cell studies
    Human
    01
    Animal
    00
    Sources
    03
    Route
    Injection

    Sold for

    An experimental drug injected into tumors to burst cancer cells and rouse the immune system.

    Studies say

    Some tumors shrank in an early trial of 39 patients. There was no comparison group.

    Skin
  84. Lutetium Lu-177 dotatateSSTR-targeted radiopeptideFDA approved
    AStrong human evidence
    Human
    01
    Animal
    00
    Sources
    02
    Route
    Intravenous

    Sold for

    A radioactive drug given by drip to treat certain gut tumors.

    Studies say

    In 229 patients it cut the risk of tumor growth or death by 79%.

    Gut and weight
  85. Lutetium Lu-177 vipivotide tetraxetanPSMA-targeted radioligandFDA approved
    AStrong human evidence
    Human
    01
    Animal
    00
    Sources
    03
    Route
    Intravenous

    Sold for

    A radioactive drug that targets advanced prostate cancer cells.

    Studies say

    Men lived longer: 15.3 months versus 11.3 months in an 831-man trial.

    Reproduction
  86. MazdutideGLP-1 / glucagon dual agonistIn clinical trials
    AStrong human evidence
    Human
    07
    Animal
    01
    Sources
    12
    Route
    Injection

    Sold for

    Weekly weight-loss shot, already sold on the gray market.

    Studies say

    Two trials in China: about 15% weight loss more than placebo over 48 to 60 weeks.

    Gut and weight
  87. MecaserminIGF-1 (recombinant)FDA approved
    BSome human evidence
    Human
    01
    Animal
    00
    Sources
    02
    Route
    Injection

    Sold for

    Approved to help very short children grow, but also misused for muscle building.

    Studies say

    Growth speed about tripled in the first year in 76 children. No trials for other uses.

    Hormones
  88. Mechano growth factorIGF-1 splice variantNot approved
    CAnimal and cell studies
    Human
    01
    Animal
    02
    Sources
    04
    Route
    Injection

    Sold for

    Sold as an injection to build muscle and heal faster.

    Studies say

    Exercise raises the body's own version. No trial has tested injecting it in people.

    Muscle and bone
  89. Melanotan IMC1R agonistNot approved
    BSome human evidence
    Human
    02
    Animal
    00
    Sources
    03
    Route
    Injection

    Sold for

    Sold online as a way to tan without sun and avoid burning.

    Studies say

    It darkened skin and cut sun damage in 65 people. The approved form treats a rare disease.

    Skin
  90. Melanotan IIMelanocortin agonist (MC1R/MC3R/MC4R)Not approved
    CAnimal and cell studies
    Human
    01
    Animal
    00
    Sources
    05
    Route
    Injection

    Sold for

    Injection sold for a deep tan, less appetite and better erections.

    Studies say

    A 1996 study of 3 men: darker skin, erections and nausea. Case reports of harm since.

    Skin
  91. MK-677 (ibutamoren)Non-peptide ghrelin mimeticNot approved
    BSome human evidence
    Human
    02
    Animal
    00
    Sources
    05
    Route
    Oral

    Sold for

    Sold as a pill that boosts growth hormone for muscle, sleep and healing.

    Studies say

    Raised growth hormone, but gave only small muscle gain in 65 older adults, with higher blood sugar.

    Muscle and bone
  92. MotixafortideCXCR4 antagonist peptideFDA approved
    AStrong human evidence
    Human
    01
    Animal
    00
    Sources
    02
    Route
    Injection

    Sold for

    A hospital injection that helps collect stem cells before a myeloma transplant.

    Studies say

    In 122 patients, 92.5% reached the stem cell target, versus 26% without it.

    Circulation
  93. MOTS-cMitochondrial-derived peptideNot approved
    CAnimal and cell studies
    Human
    01
    Animal
    02
    Sources
    07
    Route
    Injection

    Sold for

    Sold online as a way to get the benefits of exercise without training.

    Studies say

    Helped mice stay lean and run longer. It has never been given to people in a trial.

    Hormones
  94. MurepavadinAntimicrobial 'protegrin' peptidomimeticIn clinical trials
    CAnimal and cell studies
    Human
    02
    Animal
    00
    Sources
    05
    Route
    Intravenous

    Sold for

    Antibiotic for a drug-resistant hospital germ.

    Studies say

    Early studies showed it reaches the blood and cleared germs, but big trials stopped for kidney injury.

    Immunity
  95. NafarelinGnRH agonistFDA approved
    AStrong human evidence
    Human
    01
    Animal
    00
    Sources
    03
    Route
    Nasal

    Sold for

    A hormone-lowering nasal spray for endometriosis and early puberty.

    Studies say

    Shrank endometriosis and eased pain about as well as danazol, with different side effects.

    Reproduction
  96. NangibotideTREM-1 inhibitor peptideIn clinical trials
    BSome human evidence
    Human
    01
    Animal
    00
    Sources
    01
    Route
    Intravenous

    Sold for

    A drug being tested for septic shock, a severe reaction to infection.

    Studies say

    One trial of 355 patients missed its main goal. A hint of benefit showed in some.

    Immunity
  97. NesiritideNatriuretic peptideFDA approved
    BSome human evidence
    Human
    01
    Animal
    00
    Sources
    01
    Route
    Intravenous

    Sold for

    A hormone drip for people in hospital with worsening heart failure.

    Studies say

    A 7,141-patient trial found little benefit and no extra deaths.

    Circulation
  98. NNZ-2591IGF-1-related peptideIn clinical trials
    CAnimal and cell studies
    Human
    01
    Animal
    00
    Sources
    04
    Route
    Oral

    Sold for

    Pill being tested for rare genetic conditions linked to autism.

    Studies say

    One trial of 18 children found it was tolerated and scores improved, with no comparison group.

    Nervous system
  99. Nonapeptide-1Brightening peptideCosmetic ingredient
    CAnimal and cell studies
    Human
    00
    Animal
    01
    Sources
    03
    Route
    Topical

    Sold for

    Sold in creams to fade dark spots by stopping skin pigment.

    Studies say

    Blocks a pigment signal in cells. No published human trial shows it lightens skin.

    Skin
  100. OctreotideSomatostatin analogFDA approved
    AStrong human evidence
    Human
    01
    Animal
    00
    Sources
    02
    Route
    Injection

    Sold for

    A hospital injection for hormone-making tumors and a growth hormone illness.

    Studies say

    Trials show it lowers growth hormone and slows tumor growth. One trial had 85 patients.

    Gut and weight
  101. Oligopeptide-1Growth-factor peptideCosmetic ingredient
    CAnimal and cell studies
    Human
    01
    Animal
    00
    Sources
    03
    Route
    Topical

    Sold for

    Sold in skin serums for faster skin renewal and fewer fine lines.

    Studies say

    Only small studies without a comparison group, such as one with 18 people.

    Skin
  102. OxytocinOxytocin receptor agonistFDA approved
    AStrong human evidence
    Human
    11
    Animal
    02
    Sources
    15
    Route
    Several routes

    Sold for

    Nasal spray sold for anxiety, bonding and better orgasms.

    Studies say

    Proven for childbirth. Trials of the nasal spray for anxiety, PTSD and pain mostly found little.

    Reproduction
  103. Palmitoyl hexapeptide-12Signal peptideCosmetic ingredient
    CAnimal and cell studies
    Human
    00
    Animal
    01
    Sources
    03
    Route
    Topical

    Sold for

    Sold in anti-aging serums to firm skin and smooth wrinkles.

    Studies say

    Enters skin samples in the lab. No published human trial shows it changes wrinkles.

    Skin
  104. Palmitoyl pentapeptide-4Signal (collagen) peptideCosmetic ingredient
    BSome human evidence
    Human
    01
    Animal
    01
    Sources
    05
    Route
    Topical

    Sold for

    Put in anti-wrinkle creams, often as Matrixyl, to smooth fine lines.

    Studies say

    One maker-run trial of 93 women showed a small drop in wrinkles. Nobody has repeated it.

    Skin
  105. Palmitoyl tetrapeptide-7Signal / anti-inflammatory peptideCosmetic ingredient
    DNo meaningful data
    Human
    00
    Animal
    00
    Sources
    02
    Route
    Topical

    Sold for

    Sold in creams to calm skin and reduce wrinkles.

    Studies say

    No published human trial. Claims come from the maker's own tests.

    Skin
  106. Palmitoyl tripeptide-1Signal peptideCosmetic ingredient
    DNo meaningful data
    Human
    00
    Animal
    00
    Sources
    02
    Route
    Topical

    Sold for

    Cream ingredient sold to boost collagen and smooth wrinkles.

    Studies say

    Published data cover safety only; wrinkle claims rest on the maker's unpublished tests.

    Skin
  107. Palmitoyl tripeptide-38Signal peptideCosmetic ingredient
    CAnimal and cell studies
    Human
    01
    Animal
    00
    Sources
    02
    Route
    Topical

    Sold for

    Sold in anti-aging serums to rebuild skin from within and fill wrinkles.

    Studies say

    One uncontrolled study of 35 women using a serum with vitamins. The peptide's own effect is unclear.

    Skin
  108. PalopegteriparatideLong-acting PTH prodrugFDA approved
    AStrong human evidence
    Human
    01
    Animal
    00
    Sources
    02
    Route
    Injection

    Sold for

    A daily injection that replaces a missing hormone so people can stop calcium pills.

    Studies say

    In 84 adults, 79% reached normal calcium without extra pills, versus 5% on placebo.

    Muscle and bone
  109. Parathyroid hormonePTH (recombinant)FDA approved
    AStrong human evidence
    Human
    01
    Animal
    00
    Sources
    02
    Route
    Injection

    Sold for

    A hormone injection for low calcium when the parathyroid glands make too little hormone.

    Studies say

    About 53% of patients could cut their pills by half, versus 2% on a dummy shot.

    Muscle and bone
  110. PasireotideSomatostatin analogFDA approved
    AStrong human evidence
    Human
    01
    Animal
    00
    Sources
    02
    Route
    Injection

    Sold for

    Injection for Cushing's disease, a tumor that causes too much cortisol.

    Studies say

    About one in four reached normal cortisol at six months in 162 people; most got high blood sugar.

    Hormones
  111. PegcetacoplanComplement C3 inhibitor (PEG peptide)FDA approved
    AStrong human evidence
    Human
    01
    Animal
    00
    Sources
    05
    Route
    Several routes

    Sold for

    A targeted drug for rare blood, kidney and eye diseases.

    Studies say

    Beat the older drug on blood levels in 80 patients, and cut protein loss in rare kidney diseases.

    Circulation
  112. PegvisomantGH receptor antagonistFDA approved
    AStrong human evidence
    Human
    01
    Animal
    00
    Sources
    02
    Route
    Injection

    Sold for

    A daily injection for acromegaly, too much growth hormone in the body.

    Studies say

    In 112 patients, the key blood marker went back to normal in about 89% at the top dose.

    Hormones
  113. PemvidutideGLP-1 / glucagon dual agonistIn clinical trials
    BSome human evidence
    Human
    02
    Animal
    00
    Sources
    04
    Route
    Injection

    Sold for

    A weekly injection for weight loss and fatty liver disease.

    Studies say

    Liver damage cleared in 52% to 58%, versus 20% on a dummy shot. Scarring did not clearly improve.

    Gut and weight
  114. Pentapeptide-18Neurotransmitter-inhibiting peptideCosmetic ingredient
    CAnimal and cell studies
    Human
    02
    Animal
    00
    Sources
    03
    Route
    Topical

    Sold for

    Cream ingredient sold as a Botox alternative for expression lines.

    Studies say

    Two small studies of 20 people each reported fewer wrinkles, but neither had a comparison group.

    Skin
  115. PetrelintideLong-acting amylin analogIn clinical trials
    BSome human evidence
    Human
    02
    Animal
    00
    Sources
    02
    Route
    Injection

    Sold for

    Hoped to match GLP-1 weight-loss shots with fewer stomach side effects.

    Studies say

    About a tenth of body weight lost over 42 weeks, with mild nausea, in one trial.

    Gut and weight
  116. PlecanatideGuanylate cyclase-C agonistFDA approved
    AStrong human evidence
    Human
    02
    Animal
    00
    Sources
    02
    Route
    Oral

    Sold for

    A daily pill for long-lasting constipation and constipation-type IBS.

    Studies say

    In 1,394 adults, about 20% improved, versus 10% on placebo. Diarrhea was the main side effect.

    Gut and weight
  117. PN-943Oral α4β7 integrin antagonist peptideIn clinical trials
    CAnimal and cell studies
    Human
    02
    Animal
    01
    Sources
    03
    Route
    Oral

    Sold for

    A pill meant to treat ulcerative colitis, a bowel disease.

    Studies say

    The higher dose missed its goal. The lower dose gave a borderline signal, in 159 people.

    Gut and weight
  118. Polymyxin B / ColistinPolymyxin antibioticFDA approved
    BSome human evidence
    Human
    01
    Animal
    00
    Sources
    03
    Route
    Intravenous

    Sold for

    Last-resort antibiotics for germs that resist other drugs.

    Studies say

    They kill resistant germs, but no big trial shows survival gains. Adding meropenem did not help in 406 people.

    Immunity
  119. PramlintideAmylin analogFDA approved
    AStrong human evidence
    Human
    06
    Animal
    00
    Sources
    01
    Route
    Injection

    Sold for

    An add-on to mealtime insulin to blunt blood sugar spikes after meals.

    Studies say

    Lowered blood sugar a little (0.25 to 0.34 points) and weight, with nausea and low sugar risk.

    Hormones
  120. PT-141MC4R agonistNot approved
    BSome human evidence
    Human
    07
    Animal
    00
    Sources
    12
    Route
    Injection

    Sold for

    Sold online as a sex-drive and erection booster, mostly to men.

    Studies say

    In 1,267 women it gave small gains. For men there are only two small 2004 studies.

    Nervous system
  121. RetatrutideTriple GLP-1 / GIP / glucagon agonistIn clinical trials
    BSome human evidence
    Human
    04
    Animal
    00
    Sources
    09
    Route
    Injection

    Sold for

    A weekly injection that has caused the largest weight loss seen in drug trials.

    Studies say

    People lost up to 24.2% of body weight in 48 weeks, versus 2.1% on a dummy shot.

    Gut and weight
  122. RusfertideHepcidin mimetic peptideFDA approved
    AStrong human evidence
    Human
    02
    Animal
    00
    Sources
    03
    Route
    Injection

    Sold for

    Shot for a blood disease that makes too many red cells.

    Studies say

    Two trials: blood counts stayed under control and most needed less blood removal.

    Circulation
  123. SecretinSecretin hormoneFDA approved
    BSome human evidence
    Human
    02
    Animal
    00
    Sources
    02
    Route
    Intravenous

    Sold for

    A hospital test of the pancreas, once wrongly hyped as an autism cure.

    Studies say

    Reliably triggers pancreas fluid for testing. A trial of 60 children found no autism benefit.

    Hormones
  124. SelankAnxiolytic peptide (Russian)Not approved
    BSome human evidence
    Human
    02
    Animal
    02
    Sources
    11
    Route
    Nasal

    Sold for

    Sold as a nose spray to calm anxiety and sharpen focus.

    Studies say

    One small Russian trial of 62 patients, with no placebo group, showed anxiety relief.

    Nervous system
  125. SelepressinSelective vasopressin V1a agonistIn clinical trials
    CAnimal and cell studies
    Human
    01
    Animal
    00
    Sources
    02
    Route
    Intravenous

    Sold for

    A drug meant to raise blood pressure in people in septic shock.

    Studies say

    No benefit. In 868 adults, days alive and off life support were the same as with a dummy drip.

    Circulation
  126. SemaglutideGLP-1 receptor agonistFDA approved
    AStrong human evidence
    Human
    11
    Animal
    00
    Sources
    17
    Route
    Several routes

    Sold for

    Weekly shot behind Ozempic and Wegovy, for diabetes and weight loss.

    Studies say

    About 15% weight loss and 20% fewer major heart events. Weight returns after stopping.

    Gut and weight
  127. SemaxNootropic peptide (ACTH(4-10) analog)Not approved
    BSome human evidence
    Human
    05
    Animal
    02
    Sources
    13
    Route
    Nasal

    Sold for

    Sold as a nasal spray for memory, focus and recovery after stroke.

    Studies say

    Russian studies report faster stroke recovery, but none was a blinded placebo trial or repeated elsewhere.

    Nervous system
  128. SermorelinGHRH analog (secretagogue)Not approved
    CAnimal and cell studies
    Human
    10
    Animal
    00
    Sources
    14
    Route
    Injection

    Sold for

    Prescribed by anti-ageing clinics to raise growth hormone for fat loss and muscle.

    Studies say

    It raises growth hormone, but no trial shows fat loss or muscle gain in healthy adults.

    Muscle and bone
  129. SetmelanotideMC4R agonistFDA approved
    BSome human evidence
    Human
    03
    Animal
    00
    Sources
    03
    Route
    Injection

    Sold for

    A drug for rare obesity caused by gene or brain problems.

    Studies say

    Large weight loss in rare forms of obesity, in trials of 10 to 142 patients.

    Gut and weight
  130. SincalideCholecystokinin analogFDA approved
    BSome human evidence
    Human
    01
    Animal
    00
    Sources
    02
    Route
    Intravenous

    Sold for

    Hospital drug that makes the gallbladder squeeze for scans.

    Studies say

    It reliably makes the gallbladder squeeze. A 60-person study standardized how to give it.

    Gut and weight
  131. SomapacitanLong-acting GH analogFDA approved
    AStrong human evidence
    Human
    02
    Animal
    00
    Sources
    03
    Route
    Injection

    Sold for

    A weekly growth hormone shot instead of daily ones.

    Studies say

    Cut body fat in 301 adults as well as daily shots, and matched daily growth in children.

    Hormones
  132. Somatropin (rhGH)Growth hormoneFDA approved
    AStrong human evidence
    Human
    00
    Animal
    00
    Sources
    03
    Route
    Injection

    Sold for

    Lab-made growth hormone, also sold for youth, muscle and fat loss.

    Studies say

    It restores growth in children who lack the hormone. Labels do not back use in healthy adults.

    Hormones
  133. SurvodutideGLP-1 / glucagon dual agonistIn clinical trials
    BSome human evidence
    Human
    03
    Animal
    00
    Sources
    04
    Route
    Injection

    Sold for

    A weekly injection being tested for weight loss and fatty liver disease.

    Studies say

    Up to 16.6% weight loss versus 3.2% on a dummy shot; liver damage cleared more often.

    Gut and weight
  134. TB-500Synthetic Tβ4 fragmentNot approved
    CAnimal and cell studies
    Human
    00
    Animal
    02
    Sources
    10
    Route
    Injection

    Sold for

    Injection sold to heal torn muscles, tendons and ligaments.

    Studies say

    No published study tests TB-500 for injury. Related full-length protein has only small wound and eye trials.

    Muscle and bone
  135. TeduglutideGLP-2 analogFDA approved
    AStrong human evidence
    Human
    02
    Animal
    00
    Sources
    02
    Route
    Injection

    Sold for

    Helps people with a very short gut absorb more, so they need less drip feeding.

    Studies say

    Cut the amount of drip feeding in trials, and some people stopped it fully.

    Gut and weight
  136. TeriparatidePTH analogFDA approved
    AStrong human evidence
    Human
    01
    Animal
    00
    Sources
    02
    Route
    Injection

    Sold for

    A daily injection that builds new bone in people with osteoporosis.

    Studies say

    In 1,637 women, new spine breaks fell from 14% to 5% compared with placebo.

    Muscle and bone
  137. TerlipressinVasopressin analogFDA approved
    AStrong human evidence
    Human
    01
    Animal
    00
    Sources
    02
    Route
    Intravenous

    Sold for

    A hospital drug for kidney failure in people with severe liver disease.

    Studies say

    Kidneys recovered in 32% versus 17% on a dummy drip. No gain in survival.

    Gut and weight
  138. TesamorelinGHRH analogFDA approved
    BSome human evidence
    Human
    06
    Animal
    01
    Sources
    14
    Route
    Injection

    Sold for

    Shot sold to melt belly fat without the risks of growth hormone.

    Studies say

    In people with HIV, deep belly fat fell about 15% in six months, then returned. One 60-person trial otherwise.

    Gut and weight
  139. Tesamorelin (compounded)GHRH analogNot approved
    BSome human evidence
    Human
    07
    Animal
    01
    Sources
    11
    Route
    Injection

    Sold for

    Clinic injection sold to burn belly fat and raise growth hormone.

    Studies say

    Cut belly fat about 15% in people with HIV; the fat came back after stopping. One 60-person trial outside HIV.

    Hormones
  140. Thymosin alpha-1Immunomodulatory peptideNot approved
    BSome human evidence
    Human
    06
    Animal
    02
    Sources
    16
    Route
    Injection

    Sold for

    Sold as an immune booster for infections, cancer support and long COVID.

    Studies say

    Modest, slow antiviral effect in hepatitis B trials, but no benefit in a 1,106-patient sepsis trial.

    Immunity
  141. Thymosin beta-4Actin-regulating peptideNot approved
    BSome human evidence
    Human
    05
    Animal
    03
    Sources
    14
    Route
    Several routes

    Sold for

    Sold as an injection to heal tendon, muscle and joint injuries.

    Studies say

    Small trials look at eye and heart disease. Injecting it for sports injuries was never tested.

    Muscle and bone
  142. ThymulinThymic immune peptideNot approved
    CAnimal and cell studies
    Human
    00
    Animal
    02
    Sources
    02
    Route
    Injection

    Sold for

    Sold online to rejuvenate the thymus gland and balance the immune system.

    Studies say

    No human trial exists. The immune claims come from mouse experiments.

    Immunity
  143. TirzepatideDual GIP + GLP-1 receptor agonistFDA approved
    AStrong human evidence
    Human
    08
    Animal
    00
    Sources
    17
    Route
    Injection

    Sold for

    Weekly shot behind Mounjaro and Zepbound for diabetes and weight loss.

    Studies say

    Large trials: 15% to 21% weight loss and better blood sugar. Weight returns after stopping.

    Gut and weight
  144. Tripeptide-10 citrullineSignal peptideCosmetic ingredient
    DNo meaningful data
    Human
    00
    Animal
    01
    Sources
    01
    Route
    Topical

    Sold for

    Sold in anti-aging creams to organise collagen for firmer skin.

    Studies say

    One paper from its maker showed an effect in a test tube. No human trial is described.

    Skin
  145. TriptorelinGnRH agonistFDA approved
    AStrong human evidence
    Human
    01
    Animal
    00
    Sources
    03
    Route
    Injection

    Sold for

    A long-acting hormone-lowering injection for prostate cancer and early puberty.

    Studies say

    In 284 men it lowered testosterone as well as the standard drug.

    Reproduction
  146. TrofinetideIGF-1-derived tripeptide analogFDA approved
    AStrong human evidence
    Human
    04
    Animal
    00
    Sources
    06
    Route
    Oral

    Sold for

    First drug for Rett syndrome, a rare genetic brain illness.

    Studies say

    One trial of 187 people: better scores on caregiver and doctor ratings. Diarrhea in four of five.

    Nervous system
  147. Trofinetide (predecessor programs)IGF-1-derived peptideFDA approved
    BSome human evidence
    Human
    02
    Animal
    01
    Sources
    05
    Route
    Oral

    Sold for

    Tried for fragile X syndrome and brain injury before its Rett syndrome approval.

    Studies say

    One 72-person fragile X trial showed a signal at the higher dose. Brain injury work was in rats.

    Nervous system
  148. VancomycinGlycopeptide antibioticFDA approved
    AStrong human evidence
    Human
    01
    Animal
    00
    Sources
    03
    Route
    Several routes

    Sold for

    A last-resort antibiotic for MRSA and a pill for C. diff gut infection.

    Studies say

    Backed by trials and over 65 years of use. Costs include kidney damage and rising resistance.

    Circulation
  149. VasopressinV1/V2 receptor agonistFDA approved
    AStrong human evidence
    Human
    01
    Animal
    00
    Sources
    02
    Route
    Intravenous

    Sold for

    A hospital drip that raises blood pressure in patients in shock.

    Studies say

    In 778 patients it raised blood pressure as well as the usual drug, with no survival gain.

    Circulation
  150. VosoritideCNP analogFDA approved
    AStrong human evidence
    Human
    01
    Animal
    00
    Sources
    02
    Route
    Injection

    Sold for

    An injection that helps children with achondroplasia grow taller.

    Studies say

    About 1.6 cm extra growth a year in 121 children. Final adult height is not yet shown.

    Muscle and bone
  151. ZiconotideN-type Ca-channel blocker (conotoxin)FDA approved
    AStrong human evidence
    Human
    01
    Animal
    00
    Sources
    02
    Route
    Implant

    Sold for

    Cone-snail painkiller given by spinal pump for severe pain.

    Studies say

    In 111 people, pain improved 53% vs 18% on placebo, with frequent nerve and mood side effects.

    Nervous system
  152. ZilucoplanComplement C5 inhibitor peptideFDA approved
    AStrong human evidence
    Human
    01
    Animal
    00
    Sources
    02
    Route
    Injection

    Sold for

    A self-injected shot for myasthenia gravis, instead of hospital infusions.

    Studies say

    Improved daily symptoms over placebo at 12 weeks in 174 patients, with a risk of meningitis-type infection.

    Muscle and bone