Tolvaptan is prescribed to patients who have heart, liver or kidney disease. This medication helps resolve problems caused by low sodium levels. It increases the amount of water that is eliminated as urine from the body. This helps increase the level of sodium in the blood.
This medication must initially be taken in the hospital so that you can be monitored for a sudden, dangerous spike in your blood sodium levels. A sudden large increase of sodium can cause serious nerve damage and must be responded to immediately. Patients should drink water whenever they are thirsty while on this medication to decrease the chance of a sodium spike. Call your doctor if you have difficulty speaking, difficulty swallowing, feel like things are getting stuck in your throat when you eat and drink, drowsiness, involuntary body movements, seizures, weakness in the arms and legs or mood swings.