Pronunciation: fen OX ee BENZ a meen

Brand: Dibenzyline


slide 1 of 1, Dibenzyline,

10 mg, capsule, red, imprinted with SKF E33

Image of Dibenzyline
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What is the most important information I should know about phenoxybenzamine?

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 is 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.

What should I discuss with my healthcare provider 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.

How should I take phenoxybenzamine?

Follow all directions on your prescription label and read all medication guides or instruction sheets. Your doctor may occasionally change your dose. Use the medicine exactly as directed.

Call your doctor if you have fast heartbeats. You may need to be treated with an additional medication.

Store phenoxybenzamine at room temperature away from moisture and heat.

What happens if I miss a dose?

Take the medicine as soon as you can, but skip the missed dose if it is almost time for your next dose. Do not take two doses at one time.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

Overdose symptoms may include fast heart rate, vomiting, dizziness, or fainting.

What should I avoid while taking phenoxybenzamine?

Avoid driving or hazardous activity until you know how this medicine will affect you. Your reactions could be impaired.

Avoid getting up too fast from a sitting or lying position, or you may feel dizzy.

Drinking alcohol with this medicine can cause side effects.

What are the possible side effects of phenoxybenzamine?

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 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.

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.

Where can I get more information?

Your pharmacist can provide more information about phenoxybenzamine.

This information does not replace the advice of a doctor. Healthwise, Incorporated, disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Terms of Use. Learn how we develop our content.