The Food and Drug Administration (FDA) is warning consumers to not buy or use Slim-K, a product marketed for weight loss.

A FDA lab analysis verified that Slim-K was found to contain sibutramine and phenolphthalein. Sibutramine, a controlled substance, was withdrawn from the market in October 2010 for safety reasons. Sibutramine may increase blood pressure and/or pulse rate, and may pose a substantial risk for patients with a history of coronary artery disease, congestive heart failure, and arrhythmias, or stroke.

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Phenolphthalein is a chemical is not an approved ingredient in the United States. Some studies have shown that it poses a cancer-causing risk.

Bethel Nutritional Consulting has announced a voluntary recall of Slim-K capsules. The product was sold on various websites and in some retail stores as 30-count bottles.

For more information visit FDA.gov.