All lots of an authorized natural health product promoted for sexual enhancement, "Forta for Men", are being recalled after Health Canada testing confirmed one lot contains an undeclared drug: tadalafil. Tadalafil is a prescription drug that should only be used under the supervision of a health-care practitioner and may pose serious health risks. Forta for Men is manufactured by Natural Performance Products Limited and the distributor, Vivo Brand Management Inc. of Cornwall, ON, is recalling all lots as a precautionary measure. The product is sold through retail stores across the country and online. Vivo Brand Management is also recalling, as a precautionary measure, all lots of Durazest for Men (NPN 80033381). Durazest For Men is promoted for sexual enhancement and may be marketed as Drs Choice Male, Physicians Choice, Physicians Choice Male, Potent X, X-Delite. This product was sold through retail stores across the country and online.