Is there any really significant difference between the vitamins and minerals you get from different companies, those recommended by a Naturopathic Dr. for instance, (that will cost a lot more) or a Cardiologist or local Family Physician?
I know there are some differences depending on location (I'm in USA) State, City, Company etc. but some distributors cater to Drs. only or mostly.
Anyone know how they vary and how effective one is from the other.
Any info. is much appreciated.
E.S.