Creatine is a nitrogen-containing organic acid that is naturally produced in the body, mainly in the liver, pancreas, and kidneys. It is involved in supplying energy to cells, especially muscle cells, during high-intensity exercise. Creatine is a popular ingredient in many protein powders and sports supplements, as it is believed to improve athletic performance, increase muscle mass, and reduce muscle damage and soreness.
Research has shown that creatine supplementation can be safe and effective for improving exercise performance and muscle growth in healthy individuals, as long as it is used in recommended doses.