GU Energy Gel is an advanced nutritional product designed to help athletes perform at their best. GU promotes higher, ongoing glucose levels in the body with an optimal complex-to-simple carbohydrate ratio. Each serving of GU also maximizes muscle recovery with amino acids, is high in antioxidant vitamins E & C, and soothes the stomach with ginger. In 1991, our passionate little Berkeley-based sports nutrition company forever changed the way athletes re-fueled during exercise by introducing GU energy gel. GU finally made eating on the run possible and enjoyable! We take pride in our history but never let it stop us from continually improving what we do. Today, look for GU on race courses, at your favorite run/bike/tri shop or in the hands of the top athletes on the planet. GU. Performance Starts Here.