Many dietary supplements may contain ingredients, including ones not listed on the label, that are prohibited. The only way to be 100 percent safe from supplements is to not use supplements.
USADA has always recommended that athletes use only dietary supplements that have been certified by a third-party program that tests for substances prohibited in sport. If athletes choose to use supplements despite the risks, it’s important to only use Certified Supplements, which are listed below and identified in the UFC Prohibited List.
Athletes will not receive an anti-doping policy violation if they can establish by clear and convincing evidence that their positive test was due to the contamination of a supplement certified by: