Dihexa: A Comprehensive Guide to This Promising Peptide The U.S. Food and Drug Administration is moving toward allowing compounding pharmacies to produce more than a dozen injectable peptides that were banned because of potentially significant safety risks, the New York D I H E X A is having a moment right now and I get why. When something gets labeled as brain repair or synapse growth, it spreads FAST especially in communities An FDA Reversal on Peptides Could Open the Market to Unsafe Drugs ProPublica