i've taken them before. it works sometimes if you're already tired then it might help but if you're super awake you might want to take something like Tylenol PM or something
and you can't do that 20 days before your autopay would be due, why? or have them bill to a credit card like i do and then dispute the charge if they don't play ball
now that i don't have. most of my old icons were garbage and i only have them saved in a compressed 80x80 format so i'm probably never going to use any of them again