Well, of course it had to be snake oil...
When the commercials first came out, I thought it was bullshit. When the product stuck around, though, I revised the thinking, maybe it was something you had to take for a year before you got any results. Looks like my first instinct was correct:
A federal court jury on Friday found the owner of a company that sells "male enhancement" tablets and other herbal supplements guilty of conspiracy to commit mail fraud, bank fraud and money laundering. Steve Warshak is founder and president of Berkeley Premium Nutraceuticals, which distributes Enzyte and a number of products alleged to boost energy, manage weight, reduce memory loss and aid restful sleep.
I wonder, is this the first time a truly fraudulent product sponsored a NASCAR car/driver?
h/t to an LJ friend...

I've always been dubious of the benefits of STP.