Tobramin Tobramycin Polymyxin B Sulfate
MajorPolymyxin B can harm the nerves and kidneys, and taking it together with tobramycin raises that risk. Tobramycin is one of the drugs the leaflet says should be avoided with Polymyxin B. The leaflet also lists several other medicines to avoid with it, so check with your doctor or pharmacist before starting anything new.
These medicines can affect each other in a serious way. Do not start taking them together unless your doctor has said it is OK. If you already take both, do not stop either one on your own: speak to your doctor or pharmacist soon.