Looking for an Intra-workout drink, than you have found it. Skull-Plus provides the essential branched chain amino acids, L-leucine, L-isoleucine and L-valine combined with caffeine (100 mg/serving) to maximize muscle synthesis while you work out. The perfect combination to get the most out of your workout. Drink Skull-Plus during your workout and then have some of our Four Plate Protein within 1-2 hours post exercise to truly get the results you work for and want. Grind on. We are VANTRITION.