The demographic appeal of specific television channels is sorta easy to figure out.

Weather channel, CBS Sunday Morning, U.S. Open Golf, there’s a lot of commercials for sexual enhancement aids and overactive bladders.

But there are multiple tiers of companies flogging similar wares on the Internet (or so I’ve been told).

The U.S. Food and Drug Administration is warning consumers that Magic Power Coffee, an instant coffee product marketed as a dietary supplement for sexual enhancement, contains an active drug ingredient that can dangerously lower blood pressure.

Consumers who have Magic Power Coffee should stop using it immediately.

Sexual enhancement products that claim to work as well as prescription products are likely to expose consumers to unpredictable risks and the potential for injury or even death.

In the case of Magic Power Coffee, the FDA collected and analyzed the product and determined that the product contains hydroxythiohomosildenafil. This is a chemical similar to sildenafil, the active ingredient in Viagra.

Hydroxythiohomosildenafil, like sildenafil, may interact with prescription drugs known as nitrates, including nitroglycerin, and cause dangerously low blood pressure. Consumers and health care professionals should be aware of this problem and the health hazard it presents.

When blood pressure drops suddenly, the brain is deprived of an adequate blood supply, which can lead to dizziness or lightheadedness.