It might be hard to find some that don't make you want to rule from the porcelain throne with a clenched ... errr ... fist, but if you are especially susceptible to artificial sweeteners, then you may want to find an organic version of the popular powder product in order to get yourself jazzed up before you attempt to finally break the 315-pound bench press barrier.
Just do yourself a favor and make sure your elbows don't flare out and you have a full range of motion. Or you could, you know, drop the weight and just have perfect form. This way you won't have to worry about messing your favorite pair of gym underwear after a double helping of NO Shotgun.