Phenoxybenzamine

Generic name: Phenoxybenzamine
Brand names: Dibenzyline
Dosage form: oral capsule (10 mg)
Drug class: Miscellaneous cardiovascular agents

Usage of Phenoxybenzamine

Phenoxybenzamine is used to control blood pressure and reduce sweating in people with pheochromocytoma (tumor of the adrenal gland).

Phenoxybenzamine may also be used for purposes not listed in this medication guide.

Phenoxybenzamine side effects

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Stop using phenoxybenzamine and call your doctor at once if you have severe dizziness or if you feel like you might pass out.

Common side effects of phenoxybenzamine may include:

stuffy nose;

mild dizziness or drowsiness;

blurred vision;

trouble having an orgasm;

upset stomach; or

tired feeling.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Before taking Phenoxybenzamine

You should not use phenoxybenzamine if you are allergic to it.

Tell your doctor if you have ever had:

coronary artery disease (hardened arteries);

a lung infection; or

kidney disease.

Tell your doctor if you are pregnant.

You should not breastfeed while using phenoxybenzamine.

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How to use Phenoxybenzamine

Usual Adult Dose for Pheochromocytoma:

Initial dose: 10 mg orally twice dailyMaintenance dose: 20 to 40 mg orally 2 to 3 times daily until an optimal dosage (as judged by blood pressure control) is obtained.

Warnings

Follow all directions on your medicine label and package. Tell each of your healthcare providers about all your medical conditions, allergies, and all medicines you use.

What other drugs will affect Phenoxybenzamine

Tell your doctor about all your other medicines, especially:

reserpine;

tizanidine;

epinephrine (Epi-Pen), norepinephrine; or

blood pressure medications.

This list is not complete. Other drugs may affect phenoxybenzamine, including prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible drug interactions are listed here.

Disclaimer

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