Bactrim DS
"I have been having skin infections on my breasts off and on for 6 yrs. Ever since I developed mastitis when I was breastfeeding. I've been given Bactrim DS each time and advised to use  Neosporin CREAM, not ointment. I'm not sure if it works all that great. It DOES take care of the red, rashy looking inflammation surrounding the "boil"/"blister", but does not seem to even really touch the actual blister itself. Without medication it will take 3 - 4 weeks or so to heal, with meds it it takes 2 weeks. I think it has alot to do with the healing of the red rash part... so I continue to take it. The only side effect I have noticed is an almost unquenchable thirst. But, no nausea, insomnia or headaches for me."