While some research indicates that supplementation with pure creatine is safe, a survey of 33 commercially available supplements found that over 50% of them exceeded the European Food Safety Authority recommendations in at least one contaminant.
While some research indicates that supplementation with pure creatine is safe, many commercially available supplements were found to contain toxic impurities including heavy metals and organic contaminants. A survey of 33 commercially available supplements found that over 50% of them exceeded the European Food Safety Authority recommendations in at least one contaminant.