Used for Hypertension

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Manufactured by various FDA-approved generic manufacturers.

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Updated on 24 Apr 2024

Learn more about doxazosin

What dosages is doxazosin available in?

What dosages is doxazosin available in?

doxazosin is available as a 1 mg, 2 mg, 4 mg, and 8 mg oral tablet.

What is doxazosin used for?

What is doxazosin used for?

doxazosin is an alpha antagonist used for enlarged prostate (benign prostatic hyperplasia, BPH) and high blood pressure.

How does doxazosin work?

How does doxazosin work?

doxazosin is an alpha-1 blocker. In benign prostatic hyperplasia (BPH), it relaxes certain muscles in the prostate and bladder. This relaxation makes it easier for urine to flow, reducing problems with urination. In the treatment of high blood pressure, it relaxes your blood vessels. This relaxation allows blood to flow more smoothly throughout your body, which helps lower your blood pressure.

How do I take doxazosin?

How do I take doxazosin?

doxazosin is typically taken by mouth once a day.

Is it safe for me to take doxazosin?

Is it safe for me to take doxazosin?

doxazosin is a safe and effective treatment when used for FDA licensed indications. However, like all medications, they may give you unwanted side effects. You should always discuss potential side effects with your physician to ensure the medication is suitable and right for you. You should not use this medication if you have a hypersensitivity to doxazosin, other quinazolines, or any other ingredient in doxazosin.

doxazosin Common Side Effects

doxazosin Common Side Effects

Common side effects of doxazosin include:

  • Dizziness
  • Fatigue
  • Sleepiness
  • Low blood pressure
  • Shortness of breath
  • Dry mouth
  • Swelling
doxazosin Serious Side Effects

doxazosin Serious Side Effects

Serious side effects are rare with doxazosin. Contact your healthcare provider immediately if you experience any of the following. Priapism: painful erection lasting more than 4 hours

Effects of other drugs, drug classes and over-the-counter products on doxazosin

Effects of other drugs, drug classes and over-the-counter products on doxazosin

The following medications may interact with doxazosin:

  • Strong cytochrome P450 (CYP) 3A inhibitors may increase exposure to doxazosin and increased risk of hypotension
  • Concomitant administration of doxazosin with a phosphodiesterase-5 (PDE-5) inhibitor can result in additive blood pressure lowering effects and symptomatic hypotension
Who makes doxazosin?

Who makes doxazosin?

Various FDA-approved generic manufacturers

Is doxazosin safe in pregnancy?

Is doxazosin safe in pregnancy?

It is not known if doxazosin will harm your unborn baby. If you become pregnant while receiving doxazosin, talk to your healthcare provider.


What to do if you missed your doxazosin dose

The FDA's medical product safety reporting program for health professionals, patients and consumers.

Learn more about reporting side effects
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Medical Disclaimer

NowPatient has taken all reasonable steps to ensure that all material is factually accurate, complete, and current. However, the knowledge and experience of a qualified healthcare professional should always be sought after instead of using the information on this page. Before taking any drug, you should always speak to your doctor or another qualified healthcare provider.

The information provided here about medications is subject to change and is not meant to include all uses, precautions, warnings, directions, drug interactions, allergic reactions, or negative effects. The absence of warnings or other information for a particular medication does not imply that the medication or medication combination is appropriate for all patients or for all possible purposes.

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