What other drugs will affect terazosin?
Before taking terazosin, tell your doctor if you use any other blood pressure medications, especially verapamil (Calan, Covera, Isoptin, Verelan). You may need a dosage adjustment if you take terazosin with other blood pressure medicines. There may be other drugs that can affect terazosin. Tell your doctor about all the prescription and over-the-counter medications you use. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start using a new medication without telling your doctor.
