Zeptol CR 200 Carbamazepine Tolvaptan
MajorCarbamazepine speeds up the liver's breakdown of tolvaptan, so less tolvaptan stays in your blood and it may work less well. The leaflet says to avoid taking them together.
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.
What to do: Do not take them together unless your doctor has said so.