Guides to the most studied research peptides. Each one explains how the peptide might work, what the studies found and how strong the evidence is. Every guide carries an evidence label and lists its sources.
Peptide guides
- BPC-157 Lab-made peptide copied from a protein in stomach juice. Tested in more than 100 animal and cell studies for healing of tendon, muscle and the gut. Preclinical
- TB-500 TB-500 copies the active part of Thymosin Beta-4. A wide body of animal research tested it for cell movement, new blood vessels and wound healing. Preclinical
- BPC-157 + TB-500 A pairing of two repair peptides that act in different ways. Each has animal research of its own, but no published study has tested the pair. Preclinical
- Ipamorelin A five-amino-acid peptide that switches on the ghrelin receptor (GHSR-1a). It released growth hormone with little effect on cortisol, ACTH or prolactin. Preclinical
- CJC-1295 No DAC A 29-amino-acid copy of GHRH with four swaps that slow its breakdown. It lacks the DAC linker that binds albumin, so it acts for hours, not days. Preclinical
- Ipamorelin + CJC-1295 Ipamorelin acts on the ghrelin receptor and CJC-1295 No DAC on the GHRH receptor. Similar pairs released more growth hormone than the sum of each alone. Preclinical
- IGF-1 LR3 A lab-made IGF-1 that binds weakly to IGF-binding proteins, so more of it stays free. Used to study growth signals in cells and small animals. Preclinical
- Tesamorelin A lab-made form of GHRH, FDA approved for HIV-related lipodystrophy. It cuts deep belly fat by raising the body's own growth hormone. Approved Pharma
- MOTS-c A 16-amino-acid peptide coded in mitochondrial DNA. Tested in mice and small human groups for AMPK signaling, blood sugar control and exercise-like effects. Preclinical / Early Clinical
- NAD+ A coenzyme that cells need for energy, DNA repair and sirtuin enzymes. Evidence runs from basic chemistry to small human trials with mixed results. Mixed Evidence
- Epithalon Epithalon is a four amino acid peptide (Ala-Glu-Asp-Gly). Scientists have tested it in cells and rodents for effects on telomerase, the pineal gland and lifespan. Preclinical
- Kisspeptin A small brain protein from the KISS1 gene that tells the body to release GnRH. Tested in early human trials on fertility, IVF and late puberty. Early Clinical
- Thymosin Alpha-1 A 28 amino acid thymus peptide tested for T cell growth, TLR signaling and fighting viruses. Approved in several countries for hepatitis B and C and immune uses. Approved Pharma
- Melanotan 2 A lab-made ring of seven amino acids that switches on four melanocortin receptors at once. Studied for skin pigment. Its wide reach is behind the safety worries. Human Trials
- PT-141 Bremelanotide, a ring-shaped peptide that favors the MC4R receptor. FDA approved for low sexual desire disorder in women. Studied for how the brain drives arousal. Approved Pharma
- GHK-Cu A three-amino-acid peptide that carries copper. Hundreds of cell and animal studies tested it for collagen, wound healing and gene activity. Preclinical
- Semax Semax is a seven amino acid peptide made from a piece of ACTH. Russia approves it for stroke and thinking problems. Animal studies link it to higher BDNF. Approved Pharma
- Selank Selank is a lab-made copy of the immune peptide tuftsin with a stabilizing tail. Russia approves it as a nasal spray for anxiety. Most studies used animals. Approved Pharma
- Glutathione Glutathione is the main antioxidant that cells make. Small human trials have tested supplements for redox balance and detox, with mixed results. Human RCTs
- SS-31 (Elamipretide) A lab-made peptide (elamipretide) that binds cardiolipin in mitochondria. Tested in animals and human trials for how well mitochondria make energy. Early Clinical