Peptide cases sit in a place most experts cannot reach: the agents have no FDA approval, no labelled dosing and often no human trials at all, yet they are prescribed, compounded and injected every day. A generalist expert has nothing to measure the care against. The opinion counsel actually needs is what a reasonable physician could have known about BPC-157 or ipamorelin at the moment of prescribing — and whether stepping past that evidence was defensible.
That is the literature I work in. I have published clinical reference texts on peptide therapeutics, maintain an active precision-medicine practice in which these requests arrive weekly, and review the primary evidence for each agent as it appears — which means my opinions rest on the state of knowledge at the time of care, not on hindsight.