Why if Natural Supplements( MSM, etc) are supposedly fake and inefficient, why not banned from Pharmacies?

Regarding fish oil, glucosamine and Vitamin E: My allopathic physician and the allopathic physician of my lover and my parents ALL prescribe these supplements (and MANY others), so please remove your head from your ***. Prescription for Nutritional Healing was written by an MD, James Balch. The Fourfold Path to Healing was written by an MD, of VERY great renown in the Anthroposophical Community, James Cowan. Linus Pauling was a Nobel Laureate. These folks are hardly mental midgets, thank you very much, and these are just a few examples of physicians and scientists and researchers who both use and prescribe vitamins and supplements. There are thousands of MD's who not only KNOW supplements work, they use and prescribe them, and not all of them are ortlecular doctors, either. Don't even waste your time arguing this point, you've already lost.