Creatine stack is a complex of several forms of creatine, often enriched with substances to support its transport into muscle cells, as well as the precursors of nitric oxide. Supplemented formulas may also be carbohydrates, vitamins, minerals and herbal extracts. Creatine acts as a stabilizer retaining proper levels of ATP (internal energy carrier), a substance which increases the hydration of cells and muscle glycogen storage in them. Storage creatine increases energy reserves, allowing for improvement in functional capacity (strength and endurance) and a faster biological regeneration after exercise, as well as an increase in muscle mass. Creatine has potentials: ergogenic anabolic and anti-catabolic. Creatine stacks available at www.muscle-zone.pl.