Either documented serious adverse events in humans, or effectively no retrievable evidence base. Dosing figures circulating for these compounds have no scientific foundation.
Essentially no rigorous published pharmacokinetics. Epitalon is a synthetic tetrapeptide modeled on the pineal extract Epithalamin; the literature traces overwhelmingly to the Khavinson/Anisimov (Russian) research lineage without independent Western replication. No credible human half-life exists.
No regulated/standardized dosing. Doses cited in the anecdotal/wellness literature are not backed by a controlled PK or dose-finding study at approved-host sources.
In-vitro, animal, and some Russian clinical reports (telomerase/geroprotection claims) concentrated in one research lineage; independent replication and modern PK are lacking.
No boxed warning (unapproved). No controlled human safety data at Western regulatory standards; anti-aging/telomerase claims are not supported by independent controlled trials.