About this item EAAs and BCAAs - 6g Essential Amino Acids (EAAs) per, 4g from BCAAs (Branch Chain Amino Acids) per serving in the optimal 2:1:1 ratio per serving Natural Caffeine with Hydration - USN's amino stim essential amino acids plus energy provides 125mg Natural Caffeine from InnovaTea per serving with added coconut water and electrolytes for hydration Improved Flavors & Formula - USN's amino stim essential amino acids plus energy is a new and improved formula with all new product packaging! NEW and Improved formula and look! Label Transparency - USN is commited to deliverying 100% transparent and high purity formulas. Improved formula with fully transparent essential amino acids (EAAs) dosage in amino stim! Amino Stim - can be used as a pre-workout powder, pre-exercise, pre-sport, or anytime essential amino acids formula with an energy boost and branch chain amino acids as well!