Does the FDA check dietary supplements before they are sold?

a review of the evidence indicates that these effects are not well substantiated. In addition, the FDA has warned Quincy Bioscience in the past against claiming Prevagen could treat conditions such as head injuries and Alzheimer's disease and for failing to report adverse reactions. The FDA has also claimed that the key ingredient, apoaequorin, a synthetic protein, is not an acceptable ingredient in a dietary supplement.

Hey I saw this on Marketplace, I think.
No, investigation by any outside entity other then Walmart to look into it.
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Bear in mind that the FDA does NOT research the claims of supplements. The FDA merely eyes the CONTENTS of supplements and even that in terms of amounts. A pill of some supplement could be 50% sawdust and you would simply see a listing of the ingredients of sawdust included. So, when you ask me if the claims of a supplement maker mean anything, I say they can mean anything your imagination can conjure up. You can have a "clinical study" based upon 5 people. You can say something has been worked upon for 20 years and that means someone went to work 20 years ago washing dishes and that money led to them becoming a manufacturer. The claims of an ingredient being effective is not a claim that you actually receive enough of that in a pill to be effective. So, if you want to know about the science of any dietary claims, I will simply refer you to the Mayo Clinic website rather than some ad site where someone is trying to sell you something. The number of books where some quack makes a claim and surrounds the bizarre claim with some other party's good science would fill your closet. I can't challenge some dietary claim but you might as well go to sites that actually are noted for using studies vetted by peers trained in real science.

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Don't continue using diet pills for longer than 4-6 weeks without permission from your doctor. You should also talk to your doctor about when to stop.
See these natural weight loss diet pills & products that work:
acaiberry - http://track.acaiberry900.pl/product/AcaiBerry-900/?pid=129&uid=8074
[Garcinia Cambogia] - http://bit.ly/GMVNe9
[Ketone Pure] - http://bit.ly/1fZwzsm

The supplement companies are required to test their own products and make sure that the supplement facts and ingredient list are correct. The FDA does not evaluate supplements and it is under the sole responsibility of the supplement companies to make sure that their supplements are safe.