Sulfamethoxazole / trimethoprim
"I have been on Bactrim for 5 weeks now and today I decided to stop taking it due to the side effects I'm experiencing. My gums have become inflamed and have a burning sensation that is very bothersome. My face also feels somewhat numb and tingly. I'm disappointed that I can't tolerate this medicine because it really did start clearing up my moderate acne problem. I would recommend giving Bactrim a try..it just didn't agree with me."