Peptides for Body composition
Overview
2 research peptides are currently studied for body composition. This guide ranks them by evidence strength and covers their mechanisms, safety profiles, and current clinical status.
Somatropin (rHGH) — FDA-Approved
Evidence Rating: A Category: Growth Hormone
Somatropin is recombinant human growth hormone (rHGH), a 191-amino-acid protein identical to naturally produced pituitary GH. Unlike secretagogues (which stimulate GH release), somatropin IS the direct hormone. FDA-approved for multiple indications including growth hormone deficiency, Turner syndrom...
Key claims: Treats growth hormone deficiency; Promotes linear growth in GH-deficient children.
Follistatin — Early Clinical / Gene Therapy Trials
Evidence Rating: C Category: Growth & Performance
Follistatin is a naturally occurring glycoprotein researched for its ability to inhibit myostatin and activin, potentially promoting significant muscle growth beyond natural limits. It exists in multiple isoforms (FST-288, FST-303, FST-315, FST-344) with different tissue distributions and binding pr...
Key claims: Promotes muscle growth by inhibiting myostatin; May improve strength and body composition.