DIETARY SUPPLEMENT Improves Athletic Performance by Fueling Muscles Produce More Energy During Intense Workouts 5000mg of Creatine Monohydrate Per Serving Creatine has become one of the most popular sports supplements among professional and amateur athletes. In the body, creatine is converted to creatine phosphate which helps to fuel skeletal muscles and provides support for immediate energy production during high-intensity workouts. Over the past several years, numerous studies have shown that creatine supplementation may help to improve athletic performance. GNC Pro Performance creatine Monohydrate 5000 is manufactured with unsurpassed quality control to ensure purity, potency and freshness. This powder blends easily with water or your favorite sports drink.