Sulfamethoxazole / trimethoprim
"I was on Bactrim for 10 days because of a Bartholin Cyst that tested positive for MRSA. On the 7th day I started experiencing back pain, intermittent low grade fevers, chills, complete fatigue and eyeball pain.  An I.D. doctor wanted me to take it for another 7 days as a precaution but I had to force him to listen to my symptoms and he told me to stop taking the Bactrim. Also don't know if it matters that I'm not of 'normal' weight for most woman at 5'5 I'm 109lbs - the symptoms I experienced were also listed as possible "overdose"....stopped Bactrim today - feel terrible."