Does Morphine interfere with a UTI while taking antibodics at the hospital? Because last month my man was hospitalized for a UTI and he was better in 2 days, but on the 3rd day he became severly ill, and he ended up spending 9 days in the hospital. When we got home I read the instructions for after discharge the hospital gave us upon leaving, at stated his Primary Diagnosis was: SEPSIS DUE TO URINARY TRACT INFECTION, Two days ago we came back to ER for a follow-up, and they admitted him back in the hospital, and now we are still waiting for another urine test to check Microbe count? His hospital medication consists of 2 IV bag: Sodium Chloride- 1000ml and (Levofloxacin) w/added pain killer, plus the Morphine and Blood Thinner drug by shot 3 times a day. Does the Morphine and Blood Thinner shot interfere with the antiboitic