I accidentally took twice what I was supposed to. My tongue felt tingly and thick. Then I got screamingly urgent diarrhea. Shall we call it projectile? I had trouble talking. I believe that my pupils were constricted, but I am not sure because my vision was fuzzy. I also had muscle twitches. I was not terribly weak as far as walking as I would be if I forgot my pill. I walked to my car and drove home from work. Within an hour I was ok.