This is a common question people are asked in a high school weight room. People usually reply by saying they take creatine. ... The labels on creatine bottles states that creatine is not recommended for use by people less that 18 years of age. ... Sports with the most common use of creatine are football, wrestling, hockey, gymnastics, and lacrosse. ... The safety of creatine in people less than 18 years old is unknown. ...