BPC 157 at 250mcg, after eight weeks.

BPC 157 is one of the most discussed peptides in the longevity and recovery space, and one of the more divisive. The evidence is largely animal model; human data is sparse. Singapore HSA classifies it as a prescription only compound, which is the right baseline. This is an n=1 log on an eight week cycle for tendon recovery, run under medical supervision.

Body Protection Compound 157 is a synthetic peptide derived from a protein found in gastric juice. It’s gained attention in the recovery community for animal model evidence of accelerated wound healing, tendon repair, and gut lining repair.

Proposed mechanisms: VEGF upregulation (angiogenesis), nitric oxide pathway modulation, and growth hormone receptor sensitization. Healing tissue specific rather than systemic. The mechanism story is plausible; the clinical translation is still emerging.

Strong animal data (Sikiric et al., 30+ papers over two decades). Human data: very limited; a small handful of underpowered trials and many case reports. The honest sentence is: the evidence is intriguing, the safety profile in animals is clean, the human evidence is not yet sufficient to recommend it as a standard intervention.

Adults with a specific tendinopathy or recovery question, working with a doctor who’s comfortable supervising peptide protocols, willing to read the evidence honestly. People who can tolerate “maybe it works, maybe it doesn’t” and stop if it doesn’t.

Anyone unsupervised. Anyone outside a jurisdiction where the compound is legally available. Anyone seeking a longevity intervention — this is not the right tool for that question. Anyone with active cancer.

250mcg subcutaneous, twice daily, eight weeks. Compounding pharmacy with Singapore HSA compliant Rx from a sports medicine doctor. Specific question: lingering Achilles tendinosis that hadn’t resolved with conventional rehab over six months.

The specific Achilles symptom resolved by week five (subjective; physical therapist confirmed) — though crucially, I was also running structured eccentric loading during the cycle, which is the highest evidence intervention for tendinosis. Attribution is genuinely ambiguous. What didn’t shift: anything I could call “a longevity effect” or “general recovery.”

— Alvin