Peptide guides
Research-cited guides to each peptide — what it is, how it works, why it's studied, dosing reported in studies, and the linked references. Educational only, not medical advice.
Growth Hormone
- CJC-1295 (no DAC)A short-acting GHRH analog (modified GRF 1-29) that stimulates the body's own growth-hormone release — usually paired with ipamorelin; not FDA-approved.
- IpamorelinA pentapeptide growth-hormone secretagogue notable for releasing GH without the cortisol and prolactin spikes of older GHRPs — not FDA-approved.
- MK-677An orally active ghrelin mimetic that raises growth hormone and IGF-1 — investigational, never approved, and known to raise blood sugar in trials.
Healing & Recovery
- BPC-157A synthetic 15-amino-acid peptide studied in animals for tissue healing, angiogenesis and gut repair — not FDA-approved for human use.
- GHK-CuA naturally occurring copper-binding tripeptide with strong topical evidence for skin repair and collagen — injectable use is not clinically established.
- TB-500A synthetic fragment of thymosin β4 studied (mostly as the full protein, in animals) for cell migration, tissue repair and recovery — not FDA-approved.
Metabolic / Weight Loss
- RetatrutideAn investigational once-weekly 'triple agonist' (GIP/GLP-1/glucagon) that produced very large weight loss in a Phase 2 trial — not yet FDA-approved.
- SemaglutideA GLP-1 receptor agonist and the most-studied modern weight-loss and diabetes drug — FDA-approved by prescription, though the 'research peptide' versions sold online are not the approved product.
- TirzepatideA dual GIP/GLP-1 receptor agonist that produced some of the largest weight-loss results in trials — FDA-approved by prescription; the 'research peptide' versions sold online are not the approved product.