You should not use this medicine if you have had an allergic reaction to conivaptan, if you have any other kind of low blood sodium, or if you are using certain antibiotics such as ketoconazole, itraconazole, clarithromycin, ritonavir, or indinavir.
Your doctor will prescribe your exact dose and tell you how often it should be given. This medicine is given through a needle placed in one of your veins.Your dose may need to be changed several times in order to find out what works best for you.
A nurse or other trained health professional will give you this medicine.
Ask your doctor or pharmacist before using any other medicine, including over-the-counter medicines, vitamins, and herbal products.
There are many other drugs that can interact with conivaptan. Make sure your doctor knows about all other medicines you are using. These especially include ketoconazole, itraconazole, clarithromycin, ritonavir, or indinavir. Tell your doctor if you are also using midazolam, simvastatin, or digoxin (such as Lanoxin® or Digitek®).