The Food and Drug Administration said Monday that consumers should stop drinking Magic Power Coffee immediately. The instant coffee/sexual enhancement supplement, designed (at least according to its marketers) to “increase the sensation and the satisfaction of your special moments,” can cause sudden decreases in blood pressure.

Magic Power Coffee contains hydroxythiohomosildenafil (a drug similar to a component of Viagra). When combined with prescription drugs that contain nitrates, the drug can cause dangerously low blood pressure.

The ingredient was left undeclared by distributors. According to the product’s Web Site, Magic Power coffee contains natural herbs, vitamins and minerals, including horny goat weed, goji berry and American ginseng.  The supplemental information on the site does not list hydroxythiohomosildenafil.

"Because this product is an instant coffee labeled as an ‘all natural dietary supplement,’ consumers may assume it is harmless and poses no health risk," Deborah M. Autor, director of the FDA’s drug compliance office said in a statement. "In fact, Magic Power Coffee can cause serious harm."

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According to NPR, the FDA asked Magic Power Coffee’s distributors to issue a voluntary recall, but the company had failed to do so. While no formal statement has been made by the company, the product site does contain a disclaimer that urges prospective drinkers to “consult a physician before using this product if you have any medical condition including, but not limited to, strokes, high blood pressure, heart, liver, kidney or thyroid disease, diabetes, anemia, depression, anxiety, other psychiatric conditions, a family history of these or other medical conditions, or if taking any prescription, OTC and/or other herbal medications.” It is also, apparently, “not intended for use by persons under 18 years of age or women who are pregnant or nursing.”

The FDA advises consumers experiencing any negative side effects to safely discard the remaining product and consult a health care professional. Health care professionals and their patients are also encouraged to report adverse events or side effects to the FDA's MedWatch Safety Information and Adverse Event Reporting Program.

Magic Power Coffee, which is sold in a two-serving box or a 12-serving carton containing six two-serving boxes, is distributed on Web sites and online auctions by multiple independent distributors.

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