Currently vitamins and supplements are not regulated, so we don’t know if what we are being sold is even what it says on the bottle. It would be great if these vitamin companies were being checked to test potency of the vitamins and minerals we are taking in our daily supplements.
Emily if you have ever heard the chaos of what that would entail and how the costs of your supplements would be out of reach, I am unsure people would want that. Many supplement companies use several independent labs, certifying bodies, and more. These are independent test companies and some do monthly batch testing to also look for contaminants. It would be ideal if we could compile a list of these testing labels so people know what to look for. There really are a lot of these companies and labs in the US. NSF, USP, ISO, and more.
Vitamins and Supplements have an extremely safe record as verified by the annual reports of the American association of poison Control centers. They are currently allowed tp be marketed without prior approval under the Dietary Supplement Health Education Act. If your supplement is not having the desired effect switch brands. Thee are numerous reputable brands on the market. Dietary Supplements are very reasonable, esecially compared to prescription drugs. This is maintained because their is strong competition. Some companies may advertise that thet follow Good Manufacturing Practices GMP.