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The FDA uses the name Emideltide in its Federal Register notice

Preclinical mitogenic concern Tomas et al

At the time, the FDA cited risks of peptides, including everything from priapism long-lasting, painful erections to aiding the growth of tumors as reasons for the ban

Cochrane Database of Systematic Reviews (2019) Rejdak K, Sienkiewicz-Jarosz H, Bienkowski P, et al

Peptide therapy with Dihexa has been shown to improve memory, sharpen focus, and increase mental clarity

This research gap reflects the challenging regulatory landscape for peptides and the lack of pharmaceutical industry interest in compounds that cannot be patented