Speaking as a Pharmacist, there are many dietary supplements that go unchecked and are found to contain actual drugs (often times dangerous) or analogs of drugs. There are often harmful impurities found as well. Many of these companies are fined and their illegal products pulled off the market. While there are many great supplements out there, we have seen way too many that contain illegal, harmful, unclaimed, supratherapeutic, or subtherapeutic agents. More oversight is needed in the dietary supplement area. That's my 2 cents.