Drug Interaction Report

Using doxazosin and clarithromycin together may cause excessively low blood pressure. You may need a dose adjustment or more frequent monitoring of your blood pressure to safely use both medications. Contact your doctor if you experience dizziness, weakness, fatigue, lightheadedness, headache, flushing, fainting, or a rapid pulse or heart rate. Avoid driving or operating hazardous machinery until you know how the medications affects you, and use caution when getting up from a sitting or lying position. 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.

Ask your doctor before using doxazosin together with ethanol (alcohol). Using doxazosin with ethanol (alcohol) can lower your blood pressure. This can cause dizziness or feeling like you might pass out, especially when getting up from a sitting or lying position. This may be more likely to occur when you first start taking either of these medications. You may need a dose adjustment or need your blood pressure checked more often if you take both medications. You may develop flushing, warmth or redness under your skin or tingly feeling after alcohol intake (especially in you are of Asian descent) and should be advised to avoid alcohol or limit your intake. 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.

Information for this minor interaction is available on the professional version.