Creatine is an organic acid naturally produced in the liver to help supply cellular energy all over the body but particularly to muscle cells. Creatine is formed from the amino acids L-arginine, glycine, and L-methionine. Supplemental creatine helps supply energy where it is demanded in athletes to improve athletic performance. Taking supplemental creatine can actually increase high-intensity workout performance in by up to 15%. But creatine isn’t just for working out because creatine also helps treat a range of neuromuscular and neurodegenerative disorders, such as arthritis, muscular dystrophy, Parkinson’s disease, congestive heart failure, and even depression. Heck, creatine also can improve cognitive ability and can boost brain power. The cautions for creatine supplementation are a higher risk of dehydration and muscle cramps, stomach pain and nausea when taken away from food and in rare cases diarrhea. I have heard rumors of problems for people with existing kidney or liver damage but can’t find any studies to confirm that one. As always, buy a reputable brand and follow label directions.