<<Disclaimer: Verify this information before applying it to your situation.>> My doctor prescribed Mevacor for my cholesterol problem, and I checked with Merck, the manufacturer. They guarantee it's GF. Since so many GF foods contain lots of fat, my cholesterol has shot up since I've been on the GF diet, so had to give in and take the Mevacor. Thought this would help others. Have a gluten free day! Vi Orloff Encino, California