Nature & Health Co. and the FDA notified healthcare professionals of a recall of a supplement product, Libimax. FDA analysis found the product contains tadalafil, an active ingredient of an FDA-approved drug for erectile dysfunction. This product poses a threat to health because tadalafil may interact with nitrates found in some prescription drugs (such as nitroglycerin) and may lower blood pressure to dangerous levels. Consumers with diabetes, high blood pressure, high cholesterol, or heart disease often take nitrates.