PhD Supplements only contain IOC allowed ingredients, and are 100% Drug Free: As our team of athletes all compete within IOC drug-tested events, every PhD Supplement we develop must fall within the allowed IOC product listings. It makes sense that If we are designing premium, top of the range sports nutrition, we are going to design it with our team in mind. It's vital that every ingredient passing through their body is as clean as the ingredients passing through yours. That's why PhD Nutrition works closely with governing bodies to ensure that all ingredients in the products featured within the PhD portfolio are safe to use by all drug-free, drug-tested athletes.