In some sports, such as those involving weight divisions, the gain of even 1 kg can be a problem. It remains sensible for creatine users to stick to the minimum effective dose for creatine loading and maintenance, to seek supervision and monitoring of their creatine use, and use a reputable brand of creatine. Special populations such as children, adolescents and pregnant woman are reminded that the safety of creatine use has not been properly established.