I was wondering if anyone is taking both warfarin and antibiotics like Bactrim? I tested positive for Stenotrophomonas Maltophilia recently – really rare it seems. At first they prescribed Bactrim and then changed their mind. That let me to wonder if the big 3 also interacts with warfarin and how to deal with that. Is anyone familiar with that particular bacteria? They found it in the sputum culture. I have not been able to see my pulmonologist since the results came back 2 weeks ago and it is giving me a great deal of concern.