An amino-acid, Creatine based formula, Physio-Plex NPX takes pre-workout energy and post-workout recovery to an advanced level. This formula supplies specific amino acids with Creatine to improve energy, oxygen utilization and muscle repair, while reducing the negative effect of stress hormones. Physio-Plex NPX also improves fat metabolism and exercise tolerance for more effective, higher intensity training with less fatigue and soreness. This formula promotes maximum gains in muscular development and a higher level of fitness. (contains caffeine)