I am so glad to have found this site. I took 3 Bactrim pills for a urinary tract infection. After the 2nd pill I should have stopped, because I thought I was feeling oddly and wondered if it was from the drug. I talked to my mother and sister who have frequent UTI's and who take Bactrim, and they said they had no side effects from it whatsoever. I figured it was in my head then that I was feeling bad, and decided to take another dose (My 3rd). I experienced tingly, crawling feelings in my legs. Cramps and pain in my stomach, major gas and acid reflux, lower ab pain, right side pain, and low back pain. In addition, I felt out of my own body, everything seemed very bright to my eyes in an unusual way, I saw stars when I looked to the left or right and shadows, I also felt sick to my stomach or starved depending. I noticed a slightly sore throat and last night a terrible headache at the base of my neck and up the back of my head. Today I have a very sore and swollen tendon in my right side. My stomach remains bubbly and gassy and I still have some headache pain and leg pain. I also experienced rapid heartbeat to the point of just about hyperventilating. I stopped the drug immediately. It's been 2 days since I've taken any Bactrim and I still feel horrible. I can't wait until this crap is out of my system!! I am drinking tons of water and resting as much as I can. I will take Cranberry Tablets Supplements every day from now on to ward off UTI in the future, and NEVER EVER take Bactrim again. I would NOT recommend this drug to ANYONE. The side effects are horrible and all this from just 3 pills! I cannot imagine having taken more.
Good luck and good health to all who have been in this position! It stinks.