69 peptides · free, no signup
Peptide reference library.
The studied range, how often, half-life and evidence for each peptide, by goal. Every page adds how it works, safety notes and stacks, and a reconstitution example where one applies. A research range, never a dose for you.
By area
Where each peptide works.
Pick an area to see the peptides used for it. An area lights for what a peptide is used for and what people report, with the evidence beside it. It isn’t a promise that it works there.
Brain, nerves & sleep
23 peptides · Focus, memory, mood, stress, anxiety, sleep depth, dreams, nerve repair in the brain, nerve fibres outside the brain
Cerebrolysin●●●
In people. Cerebrolysin is approved in many countries outside the US for stroke recovery, traumatic brain injury and dementia; trial results are mixed.
Sermorelin●●●
Reported by users. Commonly reported: sleep improves first, often within the first week, with vivid dreams.
ARA-290●●
●In people. In a sarcoidosis trial, nerve-symptom scores improved more than placebo after 28 daily doses, and the corneal nerve-fiber measure rose.
Reported by users. Commonly reported first: deeper sleep and vivid dreams.
Epitalon●●
●In animals. Commonly reported: deeper sleep and more vivid dreams during a cycle, with little else to feel.
GHRP-2●●
●Reported by users. People report deeper sleep, more noticeable recovery and hunger after a dose (less than GHRP-6).
GHRP-6●●
●Reported by users. GH is rising too, and sleep often deepens.
Ipamorelin●●
●Reported by users. Commonly reported first: deeper sleep, with vivid dreams this week, especially with a bedtime dose.
MK-677●●
●In people. In a sleep-lab study MK-677 lengthened deep (stage IV) sleep by about 50% and REM sleep by 20–50%.
Oxytocin●●
●In people. Commonly reported: a subtle calm, warm or more connected feeling shortly after a spray.
Selank●●
●In people. In small Russian trials it eased anxiety about as well as benzodiazepine comparators.
Semax●●
●In people. Approved in Russia for stroke recovery and memory problems after brain injury.
VIP●●
●Reported by users. Commonly reported by people on CIRS protocols: a slow lift in brain fog and fatigue over weeks to months.
Adamax●
●●Reported by users. Commonly reported: focus, alertness or motivation within hours for some, a clearer response after several days for others.
Dihexa●
●●In animals. An experimental nootropic that increased new synaptic connections between neurons in rat studies from one lab.
DSIP●
●●In animals. Commonly reported: mixed, with some describing deeper sleep and vivid dreams while many notice nothing.
Humanin●
●●In animals. Strong animal mechanism work in neuroprotection and insulin sensitivity, much of it with the analog HNG.
Klotho●
●●In animals. A single injection improved memory in mice and aged monkeys (at a low dose, not a high one).
Reported by users. Commonly reported: a stronger, quicker hit of focus and drive than regular Semax at a smaller dose.
NAD+●
●●Reported by users. Commonly reported: a lift in energy and mental clarity within days.
NSI-189●
●●In people. Its phase 2 depression trial missed its main goal, though some thinking and mood scores improved at the lower dose.
P21●
●●In animals. Promoted neurogenesis, synaptic plasticity and memory in mouse and rat studies, and raised BDNF levels.
Pinealon●
●●In animals. In cell and rodent studies it protects nerve cells, and small uncontrolled Russian reports point the same way.
Skin & hair
8 peptides · Skin texture, wrinkles, collagen, tanning, hair, wound healing on the skin
Melanotan I●●●
In people. In 1990s trials it tanned both poor and good tanners through sunscreen, and the tan lasted weeks after the course ended.
Sermorelin●●●
Reported by users. Commonly reported: measurable body-composition changes and better skin by now.
GHK-Cu●
●●In people. In a controlled skin trial a GHK-Cu serum cut wrinkle volume more than a control serum.
Glutathione●
●●In people. Swallowed, it lightened skin modestly in a small 4-week trial; for injections, reviews find the evidence too thin to call.
KPV●
●●In animals. In mice, KPV given systemically or on the skin damped allergic skin reactions.
LL-37●
●●In people. As a drug it has only been tested as a topical treatment for leg and foot ulcers, with mixed results.
Melanotan II●
●●In people. MT-2 stimulates melanocytes to produce melanin (it works without sun; UV exposure speeds and deepens the tan).
SNAP-8●
●●In the lab. Less signal means the small muscles that fold expression lines pull a little less.
Heart & blood vessels
6 peptides · Heart muscle, blood pressure, blood vessels, new blood supply, cholesterol
Dulaglutide●●●
In people. It lowers blood sugar and, in people at cardiovascular risk, the combined risk of heart attack, stroke and cardiovascular death.
Semaglutide●●●
In people. The 2023 SELECT trial showed semaglutide reduced cardiovascular events by 20% independent of weight loss.
Hexarelin●●
●In people. In rats it protected heart muscle through a pathway independent of GH, and single doses raised heart pumping in small human studies.
Ac-SDKP●
●●In animals. In rodent studies it calms inflammation and scarring in the heart, kidneys and lungs and helps new blood vessels form.
PEG-MGF●
●●In animals. The clearest animal results for this peptide are heart function preserved after an induced heart attack.
Vesugen●
●●In people. Two small Russian studies measured blood flow before and after a course of Vesugen and reported it better, in the legs after artery surgery.
Immune system
4 peptides · Immune defence, the thymus, inflammation across the body, infections
In people. Naturally occurring thymic peptide that modulates immune function. It stimulates T-cell maturation and NK cell activity.
VIP●●
●In animals. Neuropeptide with potent anti-inflammatory effects in animal and cell studies; it also relaxes blood vessels and helps regulate the autonomic nervous system.
KPV●
●●In animals. A potent anti-inflammatory in cell and mouse studies that works mainly inside cells rather than through melanocortin receptors.
LL-37●
●●In animals. In lab and animal studies it modulates innate immunity, breaks up biofilms and promotes wound healing.
Gut
3 peptides · Stomach, intestines, gut lining, bloating, colitis, digestion
Larazotide●●
●In people. In the 12-week celiac trial, the lowest dose eased gut symptoms along with headache and tiredness.
BPC-157●
●●In animals. Its developers describe it as coming from a protein in human stomach juice, and in rats it helped injuries of the stomach and gut lining heal.
KPV●
●●In animals. In mouse colitis studies, KPV-treated mice had less colon inflammation and recovered sooner.
Appetite & metabolism
25 peptides · Appetite, weight, body fat, blood sugar, insulin, liver fat
Cagrilintide●●●
In people. On its own in REDEFINE 1, it averaged 11.8% weight loss at 68 weeks for people who stayed on it.
CagriSema●●●
In people. In its main trial people lost about 20% of body weight on average at 68 weeks, more than on semaglutide alone.
Dulaglutide●●●
In people. In its 36-week trial it lowered HbA1c by 1.8 points and weight by 4.6 kg on average.
HGH●●●
In people. In healthy adults, trials show about 2 kg of fat swapped for lean mass, with no strength gain and more side effects.
Liraglutide●●●
In people. In the main trial, about two in three people lost at least 5% within a year on this dose.
Mazdutide●●●
In people. In the phase 3 GLORY-1 trial, people lost about 11% to 14% of their body weight at 48 weeks.
Orforglipron●●●
In people. Its top dose averaged about 11% weight loss at 72 weeks in its main trial.
Retatrutide●●●
In people. Its top dose averaged about 25–28% weight loss at 80 weeks in phase 3.
Semaglutide●●●
In people. About 15% average weight loss at 68 weeks in its main trial.
In people. Used for type 2 diabetes, and as Wegovy tablets for weight management.
Survodutide●●●
In people. Average weight loss at 76 weeks was 12–13% counting everyone and up to 16.6% for people who stayed on it.
Tesamorelin●●●
In people. In two phase 3 trials it cut visceral fat about 15% in 26 weeks.
Tirzepatide●●●
In people. In a head-to-head trial it produced more weight loss than semaglutide (20.2% vs 13.7% at 72 weeks).
AOD-9604●●
●In people. AOD-9604 showed modest weight loss in one 12-week trial, but a larger 24-week trial failed and obesity development stopped in 2007.
Reported by users. More lean mass and modest fat loss, with sleep strong and consistent.
Reported by users. Commonly reported in this window: measurable fat loss and lean gains.
In animals. It targets fat cells: in rodents it boosted fat breakdown without affecting blood sugar or IGF-1.
GHRP-6●●
●In animals. Significantly increases appetite (shown in animals and widely reported by users) — useful for those seeking to bulk.
Ipamorelin●●
●Reported by users. Some report measurable fat loss and easier joints.
Oxytocin●●
●In people. Single nasal doses cut food intake at a test meal and blunted stress responses in small studies, though an 8-week trial produced no weight loss.
Pemvidutide●●
●In people. In a 48-week phase 2 obesity trial, average weight loss reached 15.6% on the top dose.
5-Amino-1MQ●
●●In animals. In obese mice it cut body weight and fat without reducing food intake.
Humanin●
●●In animals. Its work is background cell protection and better insulin sensitivity, seen so far only in cells and rodents.
MOTS-c●
●●In animals. In mice it activates AMPK, the pathway exercise triggers, improving insulin sensitivity and exercise capacity.
SLU-PP-332●
●●In animals. In obese mice it raised energy expenditure and fat burning and cut fat gain without changing what they ate.
Muscle
15 peptides · Muscle growth, keeping muscle, strength, exercise capacity
HGH●●●
In people. Promotes muscle growth, fat oxidation, and tissue repair.
Sermorelin●●●
Reported by users. Commonly reported in weeks 2 to 6: faster recovery from training, better skin and deeper, longer sleep.
Reported by users. Commonly reported in weeks 4 to 8: visible body-composition changes, more lean mass.
Reported by users. Commonly reported: faster recovery, fuller-looking skin and a shift in body composition, with water retention usually settled by now.
GHRP-2●●
●Reported by users. Commonly reported in weeks 2 to 8: faster recovery, better sleep and quicker body-composition changes than with milder secretagogues.
GHRP-6●●
●Reported by users. If you can channel the appetite into quality nutrition, GHRP-6 is a useful tool for hard-gainers.
Hexarelin●●
●Reported by users. Commonly reported: Hexarelin hits as hard as any secretagogue, with a strong recovery signal.
Ipamorelin●●
●Reported by users. Commonly reported now: faster recovery from training, a shorter soreness window and less stiffness after hard sessions.
MK-677●●
●In people. In trials, lean mass rose over the first year, so if nutrition is dialed, gains show up here.
In animals. Blocking that brake grows muscle: mice engineered to over-express follistatin in muscle reached sizes comparable to myostatin-knockout mice.
IGF-1 LR3●
●●In animals. Commonly reported early: fuller-feeling muscles and a stronger pump, especially trained fasted and fed afterwards.
MOTS-c●
●●In animals. Commonly reported in weeks 2 to 4: workouts feel a little easier and endurance pushes further.
PEG-MGF●
●●In the lab. In cell studies it pushed muscle precursor cells to multiply and held back their fusion into fibers.
SLU-PP-332●
●●In animals. In mice it lengthened treadmill runs by about 70% and cut fat gain without changing food intake.
SS-31●
●●Reported by users. Commonly reported by those who respond: sharper recovery from workouts and more exercise capacity.
Joints & tendons
7 peptides · Tendons, ligaments, joints, cartilage, injuries, bones
AOD-9604●●
●In animals. Cartilage repair was seen in one rabbit study.
Ac-SDKP●
●●Reported by users. Users who report on it describe it much like TB-500, a gradual easing of soft-tissue aches.
BPC-157●
●●In animals. In a rat study where the Achilles tendon was cut from the heel bone, treated tendons healed stronger and better organized over the study.
Cartalax●
●●In animals. In cell studies it raised the genes cartilage is built from in aging stem cells and damped the aging signals of cartilage cells, and in rats it slowed bone loss.
PEG-MGF●
●●In animals. In rats, the E-domain peptide improved healing of an injured tendon, and in rabbits it helped a bone defect close.
TB-500●
●●In animals. In lab and rodent studies the fragment drew blood-vessel cells, sped wound repair in aged mice and strengthened repaired tendons in rats.
In animals. Commonly reported: less nagging joint and soft-tissue pain and stiffness over a few weeks.
Sex & hormones
5 peptides · Libido, erections, testosterone, LH/FSH, fertility, the reproductive organs
Gonadorelin●●●
In people. Synthetic GnRH (identical to the natural hormone) that stimulates pituitary release of LH and FSH.
PT-141●●●
In people. FDA-approved as Vyleesi (2019) for acquired, generalized HSDD in premenopausal women.
Enclomiphene●●
●In people. In phase 3 trials it raised testosterone while largely keeping sperm production.
In people. In men, LH rises within 30–60 minutes of a dose, with testosterone following over hours.
Melanotan II●
●●In people. PT-141 is a close analog, developed for sexual function after MT-2 caused erections in trials.
Energy & longevity
13 peptides · Mitochondria, cellular energy, NAD+, ageing cells, telomeres, whole-body growth hormone
HGH●●●
In people. Recombinant human growth hormone — an identical copy of the GH your pituitary makes.
In people. In human studies one injection raised baseline GH and IGF-1 for days while natural GH pulses continued.
Epitalon●●
●In the lab. In cell studies it activates telomerase and lengthens telomeres.
MK-677●●
●In people. Stimulates GH and IGF-1 with little short-term effect on cortisol (a small rise over a year).
NMN●●
●In people. NAD+ falls in some tissues with age, and NMN reliably raises blood NAD+; small trials show modest, inconsistent functional effects.
5-Amino-1MQ●
●●In the lab. In cultured fat cells it raises NAD+ and SAM levels.
FOXO4-DRI●
●●In animals. D-retro-inverso peptide that disrupts the FOXO4–p53 interaction in senescent cells, triggering apoptosis of senescent cells specifically.
Humanin●
●●In animals. Mitochondria-derived peptide with cytoprotective and neuroprotective effects. In cell and rodent studies (many using the more potent analog HNG) it reduces apoptosis.
Klotho●
●●In animals. Dampens insulin/IGF-1 signaling (the mechanism behind its lifespan effect in mice).
MOTS-c●
●●In animals. A peptide encoded by your mitochondrial DNA, the energy-producing organelles inside every cell.
NAD+●
●●Reported by users. Central coenzyme in cellular energy metabolism (redox reactions in glycolysis, the TCA cycle, and oxidative phosphorylation).
SLU-PP-332●
●●In animals. These receptors run the genes behind mitochondria, fat burning and endurance in muscle.
SS-31●
●●In people. Mitochondria-targeting peptide that binds cardiolipin in the inner mitochondrial membrane. Improves mitochondrial function and reduces oxidative stress (cell and animal studies). FDA-approved in 2025 (accelerated) for Barth syndrome.
Healing & recovery13
- Ac-SDKPTB-500 Fragment · TB-4 Frag · Goralatide · Thymosin Beta-4 (1-4)Studied range: 250–750 mcg
- AOD-9604Anti-Obesity Drug 9604 · HGH Fragment 177-191Studied range: 250–300 mcg
- ARA-290Cibinetide · ARA290 · pHBSP · Helix B surface peptide · HBSPStudied range: 1–4 mg
- BPC-157Body Protection Compound 157 · BPC157Studied range: 200–500 mcg
- CartalaxAED peptide · Ala-Glu-Asp · KartalaxStudied range: No reference dose
- GHK-CuCopper Peptide · GHK-Copper · Tripeptide-1Studied range: 1–2 mg
- KPVLys-Pro-Val · α-MSH tripeptideStudied range: 100–300 mcg
- LarazotideAT-1001 · Larazotide AcetateStudied range: 0.5–1 mg
- LL-37Cathelicidin · hCAP-18 · CAP-18Studied range: 100–300 mcg
- TB-500Thymosin Beta-4 Fragment · TB4Studied range: 1–2.5 mg
- Thymosin Alpha-1Tα1 · Thymalfasin · ZadaxinStudied range: 1–1.6 mg
- Thymosin Beta-4Tβ4 · Full TB4Studied range: 2–2.5 mg
- VIPVasoactive Intestinal Peptide · VIP neuropeptideStudied range: 50 mcg
Growth hormone14
- CJC-1295 no DACModified GRF 1-29 · Mod GRF 1-29 · CJC-1295 without DACStudied range: 100–200 mcg
- CJC-1295 with DACCJC-1295 DAC · DAC:GRFStudied range: 1–2 mg
- Follistatin-344Follistatin · FST-344 · FS-344 · Follistatin 344Studied range: 100–200 mcg
- Fragment 176-191HGH Fragment 176-191 · HGH Frag · AOD FragmentStudied range: 250–500 mcg
- GHRP-2Growth Hormone Releasing Peptide-2 · PralmorelinStudied range: 100–300 mcg
- GHRP-6Growth Hormone Releasing Peptide-6Studied range: 100–300 mcg
- HexarelinExamorelinStudied range: 100–200 mcg
- HGHGH · rHGH · Human Growth Hormone · Growth Hormone · Somatropin · hGHStudied range: 1–4 IU
- IGF-1 LR3Long R3 IGF-1 · LR3 IGF-1 · LongR3-IGF-I · Long [Arg3] IGF-I · IGF1 LR3 · IGF-1 Long R3Studied range: 20–50 mcg
- IpamorelinIPAMStudied range: 200–300 mcg
- MK-677Ibutamoren · Nutrobal · MK677 · Ibutamoren MesylateStudied range: 10–25 mg
- PEG-MGFMechano Growth Factor · MGF · PEGylated MGF · IGF-1Ec · IGF-1 Ec peptide · MGF E-peptideStudied range: 200–400 mcg
- SermorelinGHRH 1-29 · GRF 1-29Studied range: 200–500 mcg
- TesamorelinEgriftaStudied range: 1–2 mg
Metabolic & GLP-115
- 5-Amino-1MQ5-A-1MQ · 5Amino1MQ · 5-Amino-1-methylquinoliniumStudied range: 50–100 mg
- CagrilintideCagri · AM833 · NNC0174-0833Studied range: 0.25–2.4 mg
- CagriSemaCagrilintide/semaglutide · Cagrilintide-semaglutide · Cagri-Sema · Cagri + SemaStudied range: 0.25–2.4 mg
- DulaglutideTrulicity · LY2189265 · DulaStudied range: 0.75–4.5 mg
- LiraglutideVictoza · Saxenda · Liraglutide injectionStudied range: 0.6–3 mg
- MazdutideIBI362 · LY3305677 · XinermeiStudied range: 2–6 mg
- OrforglipronFoundayo · LY3502970 · OrfoStudied range: 0.8–17.2 mg
- OxytocinOT · Love hormone · Oxytocin nasalStudied range: 10–40 IU
- PemvidutideALT-801Studied range: 1.2–2.4 mg
- RetatrutideLY3437943Studied range: 1–12 mg
- SemaglutideOzempic · WegovyStudied range: 0.25–2.4 mg
- Semaglutide (oral)Rybelsus · Wegovy pill · Ozempic pill · Oral semaglutideStudied range: 1.5–25 mg
- SLU-PP-332SLU PP 332 · SLUPP332 · SLU-PP332Studied range: 250–1000 mcg
- SurvodutideBI 456906 · BI456906 · SurvoStudied range: 0.3–6 mg
- TirzepatideMounjaro · Zepbound · LY3298176Studied range: 2.5–15 mg
Longevity13
- DSIPDelta Sleep-Inducing Peptide · Delta sleep peptideStudied range: 200–400 mcg
- EpitalonEpithalamin · Tetrapeptide AEDg · EpithalonStudied range: 5–10 mg
- FOXO4-DRIFOXO4-p53 DRI peptide · Senostatic peptideStudied range: 1–2 mg
- GlutathioneGSH · L-Glutathione · Reduced glutathione · Glutathione injectionStudied range: 100–600 mg
- HumaninHN · Mitochondrial-derived peptideStudied range: 2–4 mg
- Klothoα-Klotho · Alpha Klotho · Klotho proteinStudied range: 0.01–0.1 mg
- MOTS-cMitochondrial Open Reading Frame of the 12S rRNA-cStudied range: 5–10 mg
- NAD+Nicotinamide adenine dinucleotide · NAD · NAD plusStudied range: 50–100 mg
- NMNNicotinamide Mononucleotide · Beta-NMN · NMN supplementStudied range: 250–1000 mg
- PinealonEDR peptide · Tripeptide-4 · Glu-Asp-ArgStudied range: 100–200 mcg
- SNAP-8Acetyl octapeptide-3 · Acetyl octapeptide-1 · Snap 8Studied range: 3–10%
- SS-31Elamipretide · Szeto-Schiller 31 · MTP-131Studied range: 2–4 mg
- VesugenKED peptide · Lys-Glu-Asp · VezugenStudied range: No reference dose
Cognitive8
- AdamaxStudied range: No reference dose
- CerebrolysinFPE 1070 · Cerebrolysin injectionStudied range: 5–10 ml
- DihexaPNB-0408 · N-hexanoic-Tyr-Ile-(6) aminohexanoic amideStudied range: 10–30 mg
- N-Acetyl Semax AmidateNA Semax Amidate · NASA peptide · Semax AmidateStudied range: 100–600 mcg
- NSI-189NSI189 · NSI 189 phosphateStudied range: 40–80 mg
- P21CNTF analog · P-21 peptideStudied range: 100–300 mcg
- SelankTuftsin analogue · TP-7Studied range: 250–500 mcg
- SemaxACTH 4-7 Pro8Gly9Pro10 · N-acetyl SemaxStudied range: 200–900 mcg
Sexual health6
- EnclomipheneAndroxal · Trans-clomiphene · Enclomiphene citrateStudied range: 12.5–25 mg
- GonadorelinGnRH · Gonadotropin-releasing hormone · Gonadorelin acetateStudied range: 100 mcg
- Kisspeptin-10KP-10 · Kisspeptin · Metastin fragmentStudied range: 50–500 mcg
- Melanotan IMT-1 · MT1 · Melanotan 1 · Afamelanotide · Scenesse · CUV1647 · NDP-MSHStudied range: 250–1000 mcg
- Melanotan IIMT-2 · MT2 · Melanotan 2Studied range: 250–500 mcg
- PT-141Bremelanotide · PT141 · VyleesiStudied range: 0.5–2 mg
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