My MD removed some skin tags under my breasts two weeks ago. One blister became infected while the others have almost completely healed. I saw her today, and she prescribed me Sulfamethoxazole/Trimethoprim 800-160 for the infection. Reading about this med, what it s prescribed for, and common side effects, I feel it is overkill for a simple skin infection, especially since she implied that the infection didn t look bad (because it didn t need to be lanced and drained). The infected blister is yellow in the middle and bright red on the perimeter, with the red area becoming wider and redder in the past 24 hours. I had been treating with topical Neosporin with no visible improvement before I went to my MD. What do you think?