DIHEXA is changing the conversation around cognitive optimization., This is one of PA Tammys many, many favorite peptides! And for good reason , Unlike options that can leave you feeling jittery or Dihexa Research Grade Neurotrophic Molecule 20 mg PRG Dihexa 10mg Capsules Cognitive Research Support Peptide Pure Bio Labs Dihexa (also known as PNB 0408) is an experimental small molecule derived from angiotensin IV. It was engineered to cross the bloodbrain barrier and has shown synaptogenic effects in preclinical models. The often quoted Remember the movie Limitless and the pill that unlocked his brain? What if there was a next generation neuro peptide designed to support cognitive performance, focus, and brain health? Our Lead Wellness