medlineplus.gov/druginfo/natural/873.html

Creatine: learn about effectiveness, usual dosage, and drug interactions on MedlinePlus.

www.medicalnewstoday.com/articles/263269.php

Dec 20, 2017 ... Taking creatine supplements for up to 8 years has been shown to improve attention, language and academic performance in some children.

www.wwlp.com/health/doctors-warn-against-protein-powder-and-supplements-for-teenagers/1043881110

Jul 29, 2016 ... Experts say the numbers of teens using them has been going up, even ... "Most of my teammates take creatine, take protein, protein shakes, ...