Have you heard about Stiff Bull? It’s a coffee that they claim will give you a stiffy after drinking it – giving literal meaning to the phrase “a stiff cup of coffee”. It’s herbal, and has everything you need to get you “up” in the morning, like: tongkat ali, maca root, and guarana (whatever those things are).

The FDA, however, are telling a different story about Stiff Bull. They claim that there is an “undisclosed ingredient” inside that could have some negative side effects. This ingredient can react with the nitrates in certain prescription drugs – such as nitroglycerin. This could result in low blood pressure causing nausea, dizziness, fainting, and worse.

Legend has it that the product was derived from the South American Boner Bean. Not really – but “Boner Bean” sounds funny…so what the hell.

Source: Men’s Journal