Before Using

Drug information provided by: Micromedex

In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For this medicine, the following should be considered:

Allergies

Tell your doctor if you have ever had any unusual or allergic reaction to this medicine or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully.

Pediatric

Studies on this medicine have been done only in adult patients, and there is no specific information comparing use of doxazosin in children with use in other age groups.

Geriatric

Dizziness, lightheadedness, or fainting may be especially likely to occur in elderly patients with high blood pressure, because these patients are usually more sensitive than younger adults to the effects of doxazosin.

Pregnancy

Information about this doxazosin-oral-route
Pregnancy Category Explanation
All Trimesters C Animal studies have shown an adverse effect and there are no adequate studies in pregnant women OR no animal studies have been conducted and there are no adequate studies in pregnant women.

Breastfeeding

There are no adequate studies in women for determining infant risk when using this medication during breastfeeding. Weigh the potential benefits against the potential risks before taking this medication while breastfeeding.

Drug Interactions

Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. When you are taking this medicine, it is especially important that your healthcare professional know if you are taking any of the medicines listed below. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.

Using this medicine with any of the following medicines may cause an increased risk of certain side effects, but using both drugs may be the best treatment for you. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines.

  • Acebutolol
  • Alprenolol
  • Atenolol
  • Avanafil
  • Betaxolol
  • Bevantolol
  • Bisoprolol
  • Bucindolol
  • Carteolol
  • Carvedilol
  • Celiprolol
  • Dilevalol
  • Esmolol
  • Labetalol
  • Levobunolol
  • Mepindolol
  • Metipranolol
  • Metoprolol
  • Nadolol
  • Nebivolol
  • Nifedipine
  • Oxprenolol
  • Penbutolol
  • Pindolol
  • Propranolol
  • Sildenafil
  • Sotalol
  • Tadalafil
  • Talinolol
  • Tertatolol
  • Timolol
  • Vardenafil

Other Interactions

Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur. Discuss with your healthcare professional the use of your medicine with food, alcohol, or tobacco.

Other Medical Problems

The presence of other medical problems may affect the use of this medicine. Make sure you tell your doctor if you have any other medical problems, especially:

  • Gastrointestinal (stomach and intestines) blockage—May increase the effect of doxazosin which could increase the chance of side effects.
  • Heart problems—May make condition worse.
  • Hypotension (decrease in blood pressure)—Possible increased chance of fainting, especially after the first dose or a dose increase of this medicine.
  • Kidney disease—Possible increased sensitivity to the effects of doxazosin
  • Liver disease—The effects of doxazosin may be increased, which may increase the chance of side effects
  • Prostate cancer—Your doctor will want to make sure that you do not have prostate cancer before starting you on this medicine.