Enzyte is widely advertised on US television as "the once daily tablet for natural male enhancement".

In addition to spam, there are hundreds of Web sites devoted almost entirely to male enhancement, serving an eager if selective audience.

Nonpresciption methods of male enhancement and male enlargement range from the possibly effective to the downright dangerous.

But that makes it a true rarity among the nonprescription methods of male enhancement.

The question is, do any of these "male enhancement" techniques really work?

If you've ever watched late-night TV in the US, odds are good that you've come across Bob, the suburban everyman who goes from zero to hero after taking a product called Enzyte "for natural male enhancement."

Steven Warshak owned and operated Berkeley Premium Nutraceuticals, Inc. (Berkeley) which sold, among other products, an herbal supplement marketed as a pill for natural male enhancement, called Enzyte.

In 2008, Gentech signed an agreement with Mojo Beverage International to develop a designer non-prescription energy shot to promote male sexual enhancement called Mojo Boost.