What dosage of bactrim (sulfamethoxazole and trimethoprim) for mrsa?

MRSA: Follow doctor's directions. The key to fighting off MRSA using these new antibiotics like Bactrim (sulfamethoxazole and trimethoprim) is to follow your doctor's directions to the letter. Antibiotics won't clear up the problem right away. It usually takes two to three days for the antibiotics to affect the staph bacteria, so don't be discouraged if nothing happens on the first day. Bactrim (sulfamethoxazole and trimethoprim) ds twice a day for 7-10 days.

DS 3X/day: If you are normal size with normal renal function 1 double strength tablet (160/800 mgs) 3 times a day.