[devere]

Non-prescription substances can be dangerous, and need to be used with caution and common sense.
But prescription drugs, taken as prescribed, are one of the nation’s leading causes of death.
The primary danger of non-prescription substances is to profits of pharmaceutical companies.

[Radagast the Fool]

If any of this crap really worked, there’d be no overweight people.
Just sayin’!

[Phileleutherus Franciscus]

The primary danger of non-prescription substances is to profits of pharmaceutical companies.

Of course, since the supplement companies are not required (and feel no moral compulsion) to report adverse side effects, the danger isn't really quantifiable. Every time you take a "dietary supplement" you are taking your life in your hands. It took 10 years for the FDA to finally get ephedra off the market.