Yowza! Seems caution is still warranted in taking supplements

[moimeme]

Adulteration of Dietary Supplements

The adulteration of dietary supplements has been reported fairly frequently, yet most consumers and health care professionals are unfamiliar with the problem.

Am J Health-Syst Pharm 60(15) 2003

http://www.medscape.com/viewarticle/460319?mpid=18476

 

You have to register for Medscape but it's free.

[Tony T]

There are lobbies that have been trying to get the manufacture of vitamin supplements and other health food products under the scrutiny of the Food and Drug Administration for years. But for some reason they just go on. There hasn't been as much a problem with impurity of products as with consumers who are unaware of the effects of certain vitamins and their interaction with medicines they may be taking. For example, heart patients and others who are taking prescription blood thinners need to avoid vitamin K, which coagulates or thickens the blood and assists in clotting. Many vitamins should not be taken by pregnant or lactating females. If vitamins were dispensed by a professional rather than purchased right off the shelf, consumers would be made aware of these kinds of risks without having to read fine print.