Drug Interaction Report

When use of sodium nitrite is required, the doctor should be told if you have been receiving treatment with prazosin. Sodium nitrite can cause hypotension (low blood pressure), and the risk may be greater when combined with other medications that decrease blood pressure such as prazosin. Excessively low blood pressure can lead to shock, collapse, coma, or even death. Your doctor will need to monitor you closely and possibly take extra precautions for you to safely use these medications together. 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 prazosin together with ethanol (alcohol). Using prazosin 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.