Phenoxybenzamine is used to treat episodes of high blood pressure and sweating related to pheochromocytoma.
This medication is sometimes prescribed for other uses; ask your doctor or pharmacist for more information.
Side Effects Of Phenoxybenzamine
Phenoxybenzamine may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:
sexual dysfunction (difficulty ejaculating)
If you experience any of the following symptoms, call your doctor immediately:
Warnings & Precautions
Before taking phenoxybenzamine:
tell your doctor and pharmacist if you are allergic to phenoxybenzamine or any other drugs.
tell your doctor and pharmacist what prescription and nonprescription medications you are taking, especially medications for diet control, high blood pressure, asthma, cough, colds, allergies, and glaucoma; and vitamins.
tell your doctor if you have or have ever had heart or kidney disease, a stroke, or transient ischemic attacks (TIA).
tell your doctor if you are pregnant, plan to become pregnant, or are breast-feeding. If you become pregnant while taking phenoxybenzamine, call your doctor immediately.
if you are having surgery, including dental surgery, tell the doctor or dentist that you are taking phenoxybenzamine.
you should know that this drug may make you drowsy. Do not drive a car or operate machinery until you know how this drug affects you.
remember that alcohol can add to the drowsiness caused by this drug.
Dosage Of Phenoxybenzamine
Phenoxybenzamine comes as a capsule to take by mouth. It usually is taken two or three times a day. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take phenoxybenzamine exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor.
Phenoxybenzamine controls symptoms related to pheochromocytoma and controls bladder symptoms but does not cure them. Continue to take phenoxybenzamine even if you feel well. Do not stop taking phenoxybenzamine without talking to your doctor.
Keep all appointments with your doctor and the laboratory. Your blood pressure should be checked regularly to determine your response to phenoxybenzamine.
Do not let anyone else take your medication. Ask your pharmacist any questions you have about refilling your prescription.
It is important for you to keep a written list of all of the prescription and nonprescription (over-the-counter) medicines you are taking, as well as any products such as vitamins, minerals, or other dietary supplements. You should bring this list with you each time you visit a doctor or if you are admitted to a hospital. It is also important information to carry with you in case of emergencies.
All information has been provided courtesy of MedLinePlus from the National Library of Medicine and from the FDA.