What Is PT-141? PT-141 (bremelanotide), marketed as Vyleesi, is a synthetic cyclic heptapeptide derived from Melanotan II. Researchers originally studying Melanotan II for skin tanning discovered an unexpected effect: spontaneous sexual arousal in clinical volunteers. Palatin Technologies isolated the role of the melanocortin receptor system in sexual function and developed PT-141 as a targeted compound. […]

There is something philosophically interesting about KPV worth naming at the outset: it is the smallest molecule in this entire peptide series, just three amino acids, and it addresses one of the largest biological problems in medicine. Chronic inflammation is the common thread running through virtually every condition that degrades quality of life as we […]

Of all the peptides covered in this series, Epitalon provokes the most philosophical reaction. It is the compound that asks one of the most fundamental questions in longevity medicine: can we slow, or partially reverse, one of the most foundational biological clocks of aging? Based on current evidence, the answer is: possibly, in measurable ways, […]

In Volume One of this peptide series, DiFrancesco Plastic Surgery covered CJC-1295, the sustained release growth hormone releasing hormone analog that provides the long acting GH elevation underlying most modern GH optimization protocols. That post referenced Ipamorelin repeatedly as its clinical partner, and this article picks up that thread. The most important point to understand […]

Every peptide covered so far in this series, CJC-1295, AOD-9604, TB-500, BPC-157, and Thymosin Alpha-1, has been something DiFrancesco Plastic Surgery approaches primarily from an integrated medicine perspective: compounds with strong mechanistic rationale, variable human evidence, and important clinical nuance that patients deserve to understand accurately. GHK-Cu is different. GHK-Cu is personal to Dr. DiFrancesco’s […]

Every peptide in this series has required some version of the same honest disclaimer: the human evidence is early, the trials are small, and the data is promising but not yet definitive. Dr. DiFrancesco has written that disclosure four times now, for CJC-1295, AOD-9604, TB-500, and BPC-157. Thymosin Alpha-1 is different. Categorically. This is a […]

BPC-157, or Body Protection Compound-157, is a synthetic version of a sequence found naturally in human gastric juice, where it plays a role in protecting the mucosal lining of the gastrointestinal tract. This origin matters clinically. It is part of why BPC-157 has one of the most interesting safety profiles in the peptide therapy space, […]

Most discussions of TB-500 take place in athletic recovery circles, centered on torn tendons, strained muscles, and injuries that refuse to resolve. That context is legitimate. At DiFrancesco Plastic Surgery, however, TB-500 is viewed through a different lens entirely, one grounded in the biology of wound healing, tissue remodeling, and surgical recovery. Because plastic surgery […]