bladder infection
"I had a urinary tract infection (e-coli) and was taking Macrobid, but after a week, I was still having very discomforting symptoms. In previous UTIs my doctors had given me Bactrim and symptoms cleared up within days. I researched the medicine as soon as I ran out of it, and found that it was more effective in preventing than in treating, and users were prone to recurring infections. I promptly called the doctors the next morning and got a prescription for Bactrim. I was fine not too long after that."