Thymalin
Thymalin is sold for immunity, longevity and COVID-19. What its mostly Russian, developer run studies show, claim by claim.
Healing and immune
BPC-157
BPC-157 is a synthetic 15 amino acid peptide. Animal healing data is large, human data is tiny, and it is not approved.
TB-500
TB-500 is a short synthetic fragment related to thymosin beta 4. FDA found no human data for TB-500 by any route.
KPV
KPV is a tripeptide from alpha MSH studied for inflammation and wound healing. FDA found no human data at all.
ARA-290
ARA-290 (cibinetide) is sold for nerve pain, healing and aging. What small trials in sarcoidosis and diabetes found, claim by claim.