Premier Research Labs Premier Aminos-FX delivers a clean, practitioner-grade essential amino acid (EAA) formula designed for precision nutrition, performance support, and metabolic efficiency. This unflavored powder provides all nine essential amino acids, the foundational building blocks required for protein synthesis, tissue repair, and lean muscle maintenance. The leucine-rich EAA profile delivers 2 grams of leucine per serving, supporting activation of the mTORC1 pathway, a central regulator of muscle protein synthesis and recovery. Complete Essential Amino Acid Profile: Provides all nine essential amino acids required for full-body protein synthesis and tissue support. Leucine-Driven Muscle Support: Delivers 2g of leucine per serving to support muscle recovery, endurance, and lean mass preservation. Rapid Amino Acid Availability: Designed for efficient absorption and delivery to muscle tissue without unnecessary fillers or flavors. Immune & Gut Barrier Support: Includes Immunell® nucleotides to support immune function and intestinal lining renewal. Clean, Customizable Nutrition: Unflavored, unsweetened formula ideal for blending into smoothies, shakes, or practitioner-designed protocols. Directions Mix 1 heaping scoop (approximately 5 g) into 12 oz water and drink. Ingredients Each serving of 1 scoop (approx. 5.3 grams) contains: Amino L-40® Essential Amino Acid Blend 5,000 mg L-Leucine,L-Lysine Acetate,L-Threonine,L-Valine,L-Isoleucine,L-Phenylalanine,L-Methionine,L-Tryptophan,L-Histidine Immunell™ 50 mg Ribonucleotides,Guanosine-5'-monophosphoric acid (GMP),Adenosine-5'-monophosphoric acid (AMP),Uridine-5'-monophosphoric acid (UMP),Cytidine-5'-monophosphoric acid (CMP) Other Ingredients: Plant-Source Capsules (cellulose, water) Amino L-40® is a registered trademark of Ajinomoto Co. Immunell™ is a trademark of Nexira