You wrote>>your doctor likely has 10 years or more of postgraduate training, often decades of experience with medications that neither you, nor the people promoting over the counter products have, use caution in adding any product for health without further discussion.

True. The M.D. is versed in prescription drugs, and that education usually comes from the propaganda put out by the drug manufacturer.  The clinical trials often are conducted by these drug companies or give stipends and grants to so called "researchers". However, I find M.D.s sorely lacking in the subject of nutritional supplements, so they automatically say that these supplements should not be taken.  This is out of ignorance.  How much nutrition is studied to become an M.D.?