I actually just did a presentation not too long ago in one of my classes related to drug trafficking.
One of the key points I went over was taking
NON FDA EVALUATED PRODUCTS AND SUPPLEMENTS. Because of the DEA cutting off most of the cocaine trade through the Gulf of Mexico, both the supply
AND demand for products containing ephedrine and various amphetamine salts with the potential for extraction of raw psuedoephedrine acetate have risen tremendously. Many of these same products such as Hydroxycut have been selling in bulk through the Mexican pipelines to produce methamphetamine that will make its way to the west coast of the US.
Another big product is Adderall, and believe me, I see a lot of this stuff throughout campus.
Pretty scary stuff when you think about what people will casually take thinking it will benefit them....