The professional fun-ruiners over at the Food and Drug Administration are at it again, this time cracking down on not-at-all-shady "herbal" sex supplemement Man Up Now. Shockingly, the supposedly stamina-enhancing capsules contain sulfoaildenafil, a similar active ingredient to Viagra's sildenafil, which is responsible for lowering blood pressure to potentially dangerous levels and can also cause problems when mixed with actual prescription drugs. Thus, the FDA is now warning men to stop taking Man Up Now immediately and, presumably, to stop meeting "the challenge of going all night long."
Since Man Up Now is mostly sold online and it's questionable whether or not anyone was using it in the first place, it remains to be seen if a Four Loko-caliber hoarding movement is in the works. But either way, you've been warned.