Did you know some preclinical studies report Dihexa showing neurotrophic activity far exceeding BDNF in laboratory assays? Research links its mechanism to HGF c Met signaling and synaptic plasticity in animal models. Human data Can Dihexa Really Boost Energy and Metabolism? 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 Important Update on FDA Changes Concerning Peptides