Drug Interaction Report

Before taking fosphenytoin, tell your doctor if you also use tiZANidine. This combination may increase the fosphenytoin levels in your body. This combination may cause drowsiness, visual problems, seizures, changes in behavior, nausea, or poor muscle coordination. If you take both medications together, tell your doctor if you have any of these symptoms. You may need a dose adjustment or special test if you take both medications. It is important to tell your doctor about all other medications you use, including vitamins and herbs. Do not stop using any medications without first talking to your doctor. It is important that you tell your healthcare provider about all other medications that you are using including vitamins and herbs. Do not stop using your medications without first talking to your doctor.