In December, the FDA warned the public against using dozens of products for enhancement and weight loss in men after an agency review found it contained any ingredient not listed on the label. Some of these ingredients, like sildenafil and tadalafil in prescription erectile dysfunction drugs and sibutramine for weight loss, pose a risk to people with heart and heart problems.

Sibutramine was banned years ago because of the risk to the cardiovascular system.

In the past few days, some of the male enhancement product makers involved in the FDA’s pre-Christmas shopping spree – the agency bought the products on Amazon and eBay – have started issuing their own recalls. As of March 5th, the FDA has been warning of 9 products and their hidden ingredients. Some, like Imperial Extreme’s, contain both sildenafil and tadalafil, according to the agency.

The FDA warns consumers, especially those using nitrate drugs, not to take these products because of the serious health risk they pose. They advise anyone with the products to destroy them. The list of products with warnings can be found here.

Companies and manufacturers issuing nationwide recalls for men’s enhancement products include Ummzy LLC for Thumbs Up 7 Red 70K, Shogun-X 15000 mg, and Krazy Night Supplements; and Nuri Trading LLC for Shogun-X 7000, Thumbs Up 7 (Black) 25K, Thumbs Up 7 (White) 11K and 69MODE Blue 69.

The FDA has issued about 140 such warnings since 2017.