Peptide finder

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Pick as many as you like. The number on each one is how many people it has been measured in across the whole archive. So you can see where the evidence is before you choose.

1. 01Thymosin alpha-1 with KPV and LL-37BlendStrong. At least two finished studies in people, and at least 1,000 people who took it. 3 completed trials, 1,140 people given it.6 reported

   34 people2 studies1 found nothing

   • found nothingA cream made from LL-37 healed stubborn leg ulcers faster, in a small first test in people. 34 people first used a dummy cream for three weeks. Then they got LL-37 at one of three strengths, or a dummy, for four more weeks, and nobody knew which. The two lower strengths healed wounds about six and three times faster...

     Wound Repair and Regeneration, 2014 · 34 people

   • LL-37 was tested again, this time as a cream on foot ulcers in people with diabetes. People got it or a comparison by chance, and nobody knew who got what. This is only the second proper study of the peptide in people. Note the form both times. A cream, on a wound. Neither study injected LL-37. Neither tested it for...

     Archives of Dermatological Research, 2023 · number of people not given

2. 02LL-37PeptideModerate. At least one finished study in people, and at least 100 people who took it. 2 completed trials, 182 people given it.7 reported

   34 people1 study

   • The first human test of LL-37 on wounds looked strongly positive. Thirty-four people with leg ulcers that had refused to heal had the lowest strength applied to the wound, or a dummy. Ulcers on the drug closed roughly six times faster. Nothing worrying turned up on safety. Thirty-four people is a first look, not an...

     Wound Repair and Regeneration, 2014 · 34 people

3. 03TB-500PeptidePreliminary. Studied in people, but no published study has had people take it. 1 registered with no result.9 reported

   number of people not given0 studies
4. 04Testosterone cypionateHormoneModerate. At least one finished study in people, and at least 100 people who took it. 1 completed trial, 5,246 people given it.9 reported

   number of people not given0 studies
5. 05Omega-3SupplementStrong. At least two finished studies in people, and at least 1,000 people who took it. 3 completed trials, 34,050 people given it.4 reported

   number of people not given0 studies
6. 06GHK-CuPeptideLimited. People have taken it in a published study, but fewer than 100 of them. 2 completed trials, 99 people given it.7 reported

   number of people not given0 studies
7. 07GLOW blendBlendLimited. People have taken it in a published study, but fewer than 100 of them. 2 completed trials, 22 people given it.9 reported

   number of people not given0 studies

1. 01MelittinPeptideModerate. At least one finished study in people, and at least 100 people who took it. 5 completed trials, 658 people given it.4 reported

   538 people1 study

   • This tested whole bee venom, not melittin. Five hundred and thirty eight people with knee arthritis got weekly skin injections of venom, or of a control substance, for twelve weeks. Pain and physical function improved more on the venom. The gains were modest in size. Reactions where the needle went in were uncommon....

     Journal of Alternative and Complementary Medicine, 2019 · 538 people

2. 02ArgirelinePeptideModerate. At least one finished study in people, and at least 100 people who took it. 4 completed trials, 155 people given it.7 reported

   150 people5 studies1 found nothing

   • In a short trial the cream beat a dummy cream, mostly on what people said about their own faces. Sixty people used one or the other for four weeks. Just under half the treated group counted as responding, against none of the dummy group. Measured skin roughness moved the same way. A gap that wide is unusual in...

     American Journal of Clinical Dermatology, 2013 · 60 people

   • Wrinkles improved, and every author works for L'Oreal. Two studies were run, 50 people for still wrinkles and 42 for the wrinkles that appear when the face moves. After twelve weeks the still-wrinkle scores improved a lot and the moving-wrinkle scores improved a little. Nothing here can be credited to acetyl...

     International Journal of Cosmetic Science, 2026 · 50 people

   • A small three-way test in which this peptide came last. 21 Indonesian women aged 26 to 55 were sorted by chance into three creams: acetylhexapeptide-3, palmitoyl pentapeptide-4, or a dummy. That is about seven women per group. Over eight weeks, instruments and a wrinkle scale put palmitoyl pentapeptide-4 ahead of both...

     Journal of Clinical and Aesthetic Dermatology, 2023 · 21 people

3. 03MatrixylPeptideModerate. At least one finished study in people, and at least 100 people who took it. 2 completed trials, 114 people given it.7 reported

   93 people1 study

   • This is the best designed trial any of these cosmetic peptides has, and the peptide won. Ninety three women put the active cream on one side of the face and a plain moisturiser on the other for twelve weeks. Each woman was her own comparison, which removes most of the ways skin studies mislead. Wrinkles and fine lines...

     International Journal of Cosmetic Science, 2005 · 93 people

4. 04Collagen peptidesSupplementLimited. People have taken it in a published study, but fewer than 100 of them. 2 completed trials, 69 people given it.4 reported

   69 people1 study

   • This is the skin study the ads lean on. 69 women aged 35 to 55 took 2.5 grams or 5 grams of a branded collagen peptide, or a dummy pill, for 8 weeks. Skin stretch, the measure they named first, improved against the dummy in both dose groups. Moisture and water loss did not clearly change. Some authors have ties to the...

     Skin Pharmacology and Physiology, 2014 · 69 people

5. 05Argireline with Matrixyl and SNAP-8BlendLimited. People have taken it in a published study, but fewer than 100 of them. 1 completed trial, 60 people given it.6 reported

   60 people1 study1 found nothing

   • found nothingArgireline cream reduced wrinkle roughness in a small, short, four week test. 60 people were put by chance, three to one, on argireline or a dummy cream, twice a day around the eyes. Judges scoring by eye rated about half the argireline group as improved overall, and the dummy group not at all. Silicone moulds of the...

     American Journal of Clinical Dermatology, 2013 · 60 people

6. 06IdebenoneSupplementModerate. At least one finished study in people, and at least 100 people who took it. 5 completed trials, 732 people given it.

   41 people1 study

   • A skin cream study with no honest comparison. 41 women aged 30 to 65 with sun damaged skin used an idebenone lotion twice a day for six weeks. Graders scored the stronger version as cutting roughness and dryness by about a quarter, cutting fine lines by about a third, and raising hydration by a third. Nobody used the...

     Journal of Cosmetic Dermatology, 2005 · 41 people

7. 07SNAP-8PeptideLimited. People have taken it in a published study, but fewer than 100 of them. 1 completed trial, 24 people given it.7 reported

   24 people2 studies

   • One eye got the active patch and the other got a plain one, which is a fair way to test a face. Twenty four healthy people wore them for four weeks. The treated side showed better wrinkle improvement, held water in the skin better and was more elastic, with no side effects reported. As in the earlier patch study, this...

     Annals of Dermatology, 2024 · 24 people

   • A patch containing this peptide reduced fine lines, but the peptide cannot take the credit. People used it for twelve weeks and finished with about a quarter fewer fine lines. The patch carried several active ingredients at once, along with hyaluronic acid and the tiny needles that deliver it. Nothing in the design...

     Journal of Cosmetic Dermatology, 2020 · number of people not given

8. 08SetmelanotidePeptideLimited. People have taken it in a published study, but fewer than 100 of them. 1 completed trial, 38 people given it.4 reported

   number of people not given1 study

   • In rare genetic forms of obesity most patients lost serious weight, and there was nobody to compare them against. After about a year, 8 of 10 people with one gene fault and 5 of 11 with the other had lost at least a tenth of their body weight. Reported hunger fell by roughly a third in one group and nearly half in the...

     The Lancet Diabetes & Endocrinology, 2020 · number of people not given

9. 09Ginsenoside Rg3SupplementLimited. People have taken it in a published study, but fewer than 100 of them. 1 completed trial, 24 people given it.

   number of people not given0 studies

   • In a dish. The 20(S) form brought worn-out human skin cells back to a younger state by restoring their energy supply and changing growth and repair signals. The 20(R) form did not. This is bringing worn-out cells back, not clearing them.

     Journal of Ginseng Research, 2020 · number of people not given

10. 10TB-500PeptidePreliminary. Studied in people, but no published study has had people take it. 1 registered with no result.9 reported

    number of people not given0 studies
11. 11PT-141PeptideStrong. At least two finished studies in people, and at least 1,000 people who took it. 4 completed trials, 2,355 people given it.9 reported

    number of people not given0 studies
12. 12GHK-Cu with zinc thymulinBlendLimited. People have taken it in a published study, but fewer than 100 of them. 1 completed trial, 13 people given it.7 reported

    number of people not given0 studies
13. 13AHK-Cu with GHK-CuBlendLimited. People have taken it in a published study, but fewer than 100 of them. 1 completed trial, 13 people given it.5 reported

    number of people not given0 studies

1. 01CreatineSupplementModerate. At least one finished study in people, and at least 100 people who took it. 3 completed trials, 168 people given it.5 reported

   number of people not given1 study

   • The whole creatine causes hair loss story rests on one small study that never looked at hair. 20 college rugby players took creatine for three weeks. Their blood showed a shift in the balance between two male hormones. Nobody counted a single hair. Nobody followed the players afterwards. And no other team has got the...

     Clinical Journal of Sport Medicine, 2009 · number of people not given

2. 02AHK-CuPeptideAnimal or lab only. Only animal or lab studies on this page. No study in people yet. 1 animal study, 1 lab study, no human study.2 reported

   number of people not given0 studies

   • In a dish. Hair follicle cells became more active.

     Archives of Pharmacal Research, 2007 · number of people not given

3. 03TestosteroneHormoneModerate. At least one finished study in people, and at least 100 people who took it. 1 completed trial, 5,246 people given it.10 reported

   number of people not given0 studies
4. 04Testosterone cypionateHormoneModerate. At least one finished study in people, and at least 100 people who took it. 1 completed trial, 5,246 people given it.9 reported

   number of people not given0 studies
5. 05ExosomesBiologicModerate. At least one finished study in people, and at least 100 people who took it. 1 completed trial, 110 people given it.2 reported

   number of people not given0 studies

1. 01GonadorelinPeptideModerate. At least one finished study in people, and at least 100 people who took it. 3 completed trials, 110 people given it.8 reported

   28 people1 study

   • The pump got sperm going sooner, but no more men got there in the end. 28 men producing no sperm were compared: 10 wore a gonadorelin pump and 18 took the usual hormone injections. Nobody was assigned by chance, so the groups were not built alike. First sperm appeared at about six months on the pump against fourteen...

     American Journal of Men's Health, 2019 · 28 people

2. 02GHK-CuPeptideLimited. People have taken it in a published study, but fewer than 100 of them. 2 completed trials, 99 people given it.7 reported

   13 people1 study1 found nothing

   • found nothingNothing an outside observer could measure got better. 13 patients had laser resurfacing around the mouth, then were assigned at random to a skincare routine with or without GHK-Cu. Judges who did not know which patient got which, plus computer image analysis, found no difference in redness, wrinkles or overall skin...

     Archives of Facial Plastic Surgery, 2006 · 13 people

3. 03Melanotan IIPeptideStrong. At least two finished studies in people, and at least 1,000 people who took it. 5 completed trials, 1,310 people given it.9 reported

   3 people1 study

   • The first look at this compound in people was tiny, and the side effect it turned up became the reason people buy it. Three male volunteers took shots under the skin for two weeks. Their skin darkened, which was the point. Most doses made them feel sick, and the highest left them drowsy and tired. They also got...

     Life Sciences, 1996 · 3 people

4. 04RusfertidePeptideModerate. At least one finished study in people, and at least 100 people who took it. 5 completed trials, 166 people given it.

   number of people not given1 study

   • This study measured what the body does with rusfertide, not whether it helps anyone. Healthy adults took a range of doses, each person trying more than one, and everybody knew what they were getting. Peak levels arrived a day after the smaller doses and within hours after the larger ones. The body took anywhere from...

     Drugs in R and D, 2024 · number of people not given

5. 05Melanotan IPeptideModerate. At least one finished study in people, and at least 100 people who took it. 2 completed trials, 170 people given it.8 reported

   number of people not given0 studies