dosage of bactrim for uti
The recommended Bactrim dosage for treating a urinary tract infection is one double-strength or two regular-strength tablets every 12 hours for 10 to 14 days.osage of Bactrim: An Introduction. The dose of Bactrim Â® (sulfamethoxazole/trimethoprim) that your healthcare provider recommends will vary, depending on a number of factors, including: 1  The type of infection and bacteria. 2  Your height and weight (for some uses).