Peptide library
Fact sheets on 70 peptides: how each one works, whether it is approved, what the research shows and the risks. Information — not medical advice.
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Approved
- BremelanotideAn injection that increases sexual desire. Approved in the US for women before menopause with low libido (Vyleesi).
- Growth hormone (HGH)Lab-made human growth hormone — identical to the hormone your body makes. A prescription medicine.
- L-CarnitineA natural nutrient (not a peptide) that helps your cells burn fat for energy. As a prescription injection it treats carnitine deficiency.
- OxytocinThe "love hormone" — involved in childbirth, breastfeeding and bonding. As a medicine it's used in hospitals during labour.
- SS-31A small peptide that protects the mitochondria. Approved in the US for Barth syndrome, a rare inherited disease.
- SemaglutideA weekly injection that makes you feel full sooner and less hungry. It's the active ingredient in Wegovy and Ozempic.
- TesamorelinA peptide that raises your own growth hormone. Approved in the US to reduce belly fat in people with HIV.
- TirzepatideA weekly injection for weight loss and type 2 diabetes. It's the active ingredient in Mounjaro and Zepbound.
- hCGA pregnancy hormone used as a fertility medicine. In men it can make the testicles produce testosterone.
- hMGA fertility medicine that contains two hormones (FSH and LH) to help eggs grow.
Not approved
- 5-Amino-1MQA small lab-made molecule (not a peptide) sold for fat loss.
- AICARA compound (not a peptide) that tricks your cells into thinking you've exercised. Banned in sport.
- AOD-9604A small piece of growth hormone that was developed as a fat-loss drug — but it didn't work well enough in trials.
- ARA-290A small piece of EPO (the hormone that makes red blood cells) that protects nerves without raising blood counts.
- AdamaxA "designer" version of Semax with chemical changes at both ends. Sold online with no research behind it.
- AdipotideAn experimental compound that tries to "starve" fat by cutting off its blood supply.
- BPC-157A lab-made peptide based on a protein from stomach juice. One of the most popular "healing" peptides.
- CJC-1295A peptide that makes your body release more of its own growth hormone. Sold in two versions: with DAC (lasts days) and without (lasts minutes).
- CagrilintideA long-acting version of amylin, a hormone that helps you feel full. It's being developed together with semaglutide.
- CartalaxA tiny synthetic peptide (just a few amino acids) from the Russian "bioregulator" research programme. It's marketed for joints and cartilage.
- CerebrolysinA mix of small peptides taken from pig brain. Used for stroke and dementia in some countries.
- ChonlutenA tiny synthetic peptide (just a few amino acids) from the Russian "bioregulator" research programme. It's marketed for the lungs and airways.
- CortagenA tiny synthetic peptide (just a few amino acids) from the Russian "bioregulator" research programme. It's marketed for brain function.
- DSIPA peptide discovered in the 1970s and named "delta sleep-inducing peptide" — but its effect on sleep is unclear.
- EpitalonA tiny peptide (four amino acids) based on an extract of the pineal gland. Sold for "anti-ageing".
- FOXO4-DRIAn experimental peptide that clears out old, worn-out ("zombie") cells in mice.
- GHK-CuA natural copper-carrying peptide found in your blood. Widely used in skin creams.
- GHRP-2A strong growth-hormone booster. In Japan it's used in hospitals to test for growth hormone deficiency.
- GHRP-6One of the first growth-hormone-boosting peptides. Known for making people very hungry.
- GlutathioneYour body's main antioxidant — a small three-part peptide. Injections and drips are sold for "detox" and lighter skin.
- GonadorelinA lab-made copy of GnRH, the brain hormone that controls the sex hormones.
- IGF-1 LR3A long-lasting, lab-made version of IGF-1 — the growth factor that growth hormone works through. Made for lab research.
- IpamorelinA peptide that gently boosts your own growth hormone. Popular because it causes less hunger than older peptides like it.
- KPVA tiny peptide (three amino acids) that calms inflammation. Mostly studied for gut inflammation.
- KisspeptinA natural hormone that switches on your reproductive system. Researchers study it for fertility.
- LL-37A natural antibiotic made by your own immune system.
- LivagenA tiny synthetic peptide (just a few amino acids) from the Russian "bioregulator" research programme. It's marketed for liver function.
- MGF / PEG-MGFA piece of IGF-1 that muscles make after hard training. "PEG-MGF" is a version made to last longer.
- MOTS-cA small peptide made by your mitochondria (your cells' power plants). Studied for metabolism and exercise.
- MazdutideA weekly weight-loss injection approved in China in 2025. It acts on both GLP-1 and glucagon.
- Melanotan IIA "tanning injection" that makes your skin darker without sun. Regulators in several countries warn against it.
- NAD+A molecule found in every cell that helps turn food into energy. NAD+ injections and drips are sold as "anti-ageing".
- NeuroxelinA product name used by online peptide sellers. We could not find any research, chemical formula or official record for it.
- OvagenA tiny synthetic peptide (just a few amino acids) from the Russian "bioregulator" research programme. It's marketed for the liver and digestion.
- PE-22-28A shortened version of a peptide that acted as a fast antidepressant in mice.
- PNC-27An experimental lab peptide designed to kill cancer cells. It is not a cancer treatment.
- PinealonA tiny synthetic peptide (just a few amino acids) from the Russian "bioregulator" research programme. It's marketed for brain function and sleep.
- ProstamaxA tiny synthetic peptide (just a few amino acids) from the Russian "bioregulator" research programme. It's marketed for the prostate.
- RetatrutideA new weight-loss drug still being tested. It works on three hunger and metabolism hormones at once — that's why it's called a "triple agonist".
- SLU-PP-332A lab-made molecule (not a peptide) studied as an "exercise in a pill" in mice.
- SNAP-8An anti-wrinkle peptide used in creams. Sometimes called "Botox in a jar" — but it's much weaker.
- SelankA nasal-spray peptide used in Russia to reduce anxiety without making you sleepy.
- SemaxA nasal-spray peptide used in Russia for stroke recovery and focus.
- SermorelinA peptide that tells your body to make more of its own growth hormone. It used to be a prescription drug in the US.
- SurvodutideA weekly injection being tested for weight loss and fatty liver disease. It acts on both GLP-1 and glucagon.
- TB-500A lab-made piece of thymosin beta-4, a protein involved in wound healing. Sold for injury recovery.
- TestagenA tiny synthetic peptide (just a few amino acids) from the Russian "bioregulator" research programme. It's marketed for male hormones and the testicles.
- Thymosin Alpha-1A peptide from the thymus gland that strengthens the immune system. A prescription drug in some countries outside the EU and US.
- VesugenA tiny synthetic peptide (just a few amino acids) from the Russian "bioregulator" research programme. It's marketed for healthy blood vessels.
- VilonA tiny synthetic peptide (just a few amino acids) from the Russian "bioregulator" research programme. It's marketed for the immune system.
Blends
- AOD-9604 + CJC-1295 + Ipamorelin blendThree peptides in one vial, sold for fat loss: AOD-9604 plus two growth-hormone boosters.
- BPC-157 + TB-500 blendBPC-157 and TB-500 in one vial. Popular for injury recovery and sometimes called the "Wolverine stack".
- CJC-1295 + GHRP-2 blendCJC-1295 and GHRP-2 in one vial — a strong growth-hormone booster combination.
- CJC-1295 + Ipamorelin blendCJC-1295 and ipamorelin in one vial — two growth-hormone boosters that work through different routes.
- Cagrilintide + SemaglutideCagrilintide and semaglutide combined. Novo Nordisk's next weight-loss injection, waiting for approval.
- GLOW blendA brand name for a mix of GHK-Cu, BPC-157 and TB-500, sold for skin and recovery. What's inside varies by seller.
- KLOW blendGLOW plus KPV — four peptides in one vial, sold for skin, recovery and inflammation. What's inside varies by seller.
- PT-141 + Melanotan II stackTwo related peptides sold together: PT-141 (for libido) and Melanotan II (for tanning).
- Tesamorelin + Ipamorelin blendTesamorelin and ipamorelin in one vial. Tesamorelin alone is a US prescription drug; the blend is not.
- Tri-Heal blendTB-500, BPC-157 and KPV in one vial, sold for injury recovery.
Information — not medical advice. PepTimer does not replace a doctor. Many peptides are not approved medicines in the EU, UK or US. Talk to a qualified healthcare provider before starting, changing or stopping any treatment.