The FDA's Category 2 list restricted 19 peptides from compounding. Now, approximately 14 of them may be coming back. HHS has signaled that peptides previously barred from compounding spanning categories like Dihexa rescued the cognitive ability of APP PS1 mice. (A) Dihexa Download Scientific Diagram Everything You Need to Know About the FDA Peptide Ban Peptides: FDA Approved vs Research Peptides Not all peptides are created equal Some are FDA approved medications with real clinical data, regulated manufacturing, and proven safety. Others are sold online as DIHEXA Research Capsules Peptide Tech