You won't die. I took Pepto on Friday, but when it wasn't helping and I knew I had a long day ahead of me I took 1/2 an Immodium. This is Sunday afternoon, though, and I'm still constipated. I'm surprised, though, because never before has 1/2 an imodium had such an effect on me. I expected to go to the bathroom again that evening, not still be constipated on Sunday! So it isn't pleasent... but I'm feeling fine other than that.