Phenibut totally free amino acid has close to ninety nine% Lively Phenibut. A low dosage is required for Phenibut free of charge amino acid as it truly is significant in potency. GABA-B Receptor Agonist: The key mechanism of action of phenibut is being an agonist within the GABA-B (gamma-aminobutyric acid type B) receptors. GABA is the key inhibit