Obviously not.
> Almost a decade ago, experts were talking about how these supplements often contained “just a fraction of the ingredient on their labels–if any at all,” along with pesticide and heavy metal contamination. Just this year, news emerged that dietary supplements are tops in drug recalls for containing ingredients that pose a risk of “severe adverse health consequences or death.”
Plus only 2 companies from the study had 100% authentic ingredients. Pretty sure there are still more than two supplement companies still around.
Plus all the weight loss and body building supplements that contain drugs keep coming out and it doesn't effect sales of other products.
And anyways it is playing a game of whack a mole.
Plus you have a complete and total misunderstand about how supplement research is carried out.