Over-the-counter supplements skip FDA monitoring because there are too many products. They're made informally with unknown contents and often tainted with prescription drugs like those in sexual enhancement or energy pills.
Chapters
So the FDA monitor prescription drug, but do not monitor over the counter supplement. There's too many to monitor, but they only screen some that are reported to them. And just know that somebody can make a supplement in the garage and bring it by the store that you see and say, hey, if you sell this, I'm going to give you a commission or something like that. So it's not monitored. You don't know the potency, you don't know what's in it. Tainted sexual enhancement, an energy product that are in the supplement that is over the counter. What's the dangerous part? You can buy this over the counter and yet it has prescription medicine in it. And the FDA cautions you in using these products.