Thankfully, that’s the magic Phenibut provides. Phenibut can be a brain-boosting compound that’s been common amid nootropics and wellness seekers for many years.GABA-B Receptor Agonist: The main system of motion of phenibut is as an agonist in the GABA-B (gamma-aminobutyric acid form B) receptors. GABA is the primary inhibitory neurotransmitter