THORNE Creatine - Micronized Creatine Monohydrate Powder, Amino Acid Support for Muscles, Cellular Energy Cognitive Function* - Unflavored - NSF Certified for Sport - 5 g per Serving - 90 Servings About this item Muscle Mass: Creatine is an amino acid that promotes lean body mass and supports increases in muscle endurance, muscle capacity, and power output* Cellular Energy Production: Creatine helps the cells of the body more efficiently create energy, thus benefiting exercise capacity* Brain Function: Although creatine is known for its muscle-enhancing benefits, it has also been shown to support cognitive function* NSF Certified for Sport: Tested for compliance with label claims and to ensure the absence of nearly 300 substances banned by many major athletic organizations Trusted: Thorne is chosen by champions and trusted by 100+ professional sports teams, a proud partner of U.S. National Teams, and the #1 recommended clinical brand by health-care practitioners