I came across this on Facebook and I think it's very valuable for all to know. Doctors rarely recommend many supplements simply because they are not regulated, not because they get paid off by the pharmaceutical companies. This is something we have to be very careful and conscious of.
Supplements can be dangerous. I have heard of far too many problems from using them. This does not pertain to all supplements. I assume if they have the USP seal on them that they have been approved and are safe, at recommended levels — key there, recommended levels.