Nutrition and Supplements Amino acids Rule1 R1 Pre Amino 30 servings Peach Mango Amino part. Power part. Completely versatile. Use it in place of morning or afternoon coffee, a serving before a long study session, or a double help before a tough HIIT cardio workout. No matter how or when you use it, R1 Pre Amino provides a booster of essential amino acids and naturally derived caffeine to help you get started and continue. 6g Essential Amino Acid Blend (EAA) 2.5g BCAA 120mg Energy Blend with Green Tea & Coffee Fruit Extracts * CarnoSyn beta alanine, citrulline and glutamine Full panel transparency Carefully mixed and packaged in a GMP facility In the USA.