Strange - if I take 1 x 1mg xanax, it starts taking effect about 45mins-1hour. If I take 2 x 1mg, they start taking effect no sooner than two hours, sometimes 2.5 hours. If I take 3 x 1mg, it can take up to 4 hours to feel any effect. I took 5 x 1mg the other day at 4pm, and went to bed at midnight without having felt any effect at all. Does anybody have any insight?