Description
Dibenzyline is a non-selective alpha-adrenergic antagonist. It is commonly used to treat high blood pressure (hypertension) and excessive sweating associated with pheochromocytoma, a rare tumor of the adrenal glands.
High blood pressure is a common condition that is a significant contributor to deadly heart conditions like heart attack, arrhythmia, and atherosclerosis. Blood pressure can go unnoticed for years, and it is important to appropriately treat it.
Phenoxybenzamine blocks alpha-adrenergic receptors, preventing norepinephrine from constricting blood vessels. This results in blood vessel relaxation, lowering blood pressure, and reducing sweating.
Fact Table
|
Formula
|
C18H22ClNO
|
License
|
US FDA
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Bioavailability
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20-30% (oral)
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Legal status
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Prescription only (?)
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Chemical Name
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N-(2-Chloroethyl)-N-(1-methyl-2-phenoxyethyl)benzenemethanamine
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Elimination half-life
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24 hours
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Dosage (Strength)
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10 mg capsules
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Pregnancy
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Consult a doctor
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Brands
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Dibenzyline
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Protein binding
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90-95%
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PubChem CID
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4763
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MedlinePlus
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a682250
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ChEBI
|
CHEBI:45081
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ATC code
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C04AX02
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DrugBank
|
DB00925
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KEGG
|
D08359
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Routes of administration
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Oral
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Directions
The usual starting dosage is 10 mg by mouth twice daily.
If needed, the dosage can be increased every other day to a target of 20-40 mg two to three times daily.
Ingredients
The active ingredient in Dibenzyline is phenoxybenzamine.
Interactions
Tell your doctor and pharmacist if you are taking any of the following drugs:
- Acebutolol
- Alprenolol
- Asenapine
- Atenolol
- Betaxolol
- Bevantolol
- Bisoprolol
- Bucindolol
- Carteolol
- Carvedilol
- Celiprolol
- Dilevalol
- Esmolol
- Labetalol
- Levobunolol
- Mepindolol
- Melphalan
- Metipranolol
- Metoprolol
- Nadolol
- Nebivolol
- Oxprenolol
- Penbutolol
- Pindolol
- Propranolol
- Silodosin
- Sotalol
- Tadalafil
- Talinolol
- Tamsulosin
- Tertatolol
- Timolol
- Vardenafil
Cautions
Tell your doctor before starting Dibenzyline if you have a history of cardiovascular disease, renal impairment, or conditions affecting blood pressure regulation.
This drug can cause significant drops in blood pressure, especially upon standing (orthostatic hypotension), leading to dizziness or fainting.
If you feel dizzy when standing, rise slowly from sitting or lying positions to reduce the risk of these effects. Tell your doctor if you experience these side effects because it might mean your dose is too high.
Regular monitoring of blood pressure and other vital signs is essential during treatment with phenoxybenzamine.
Side Effects
The most common side effects of this drug may include:
- Absence of ejaculation
- Dizziness
- Fatigue
- Hypotension
- Miosis
- Nasal congestion
- Nausea
- Seizure (serious)
- Sedated
- Somnolence
- Tachyarrhythmia
- Vomiting
- Xerostomia
References
Dibenzyline [package insert].Oakville, Ontario: WellSpring; March 2008.
About Dr. Conor Sheehy (Page Author)
Dr. Sheehy (BSc Molecular Biology, PharmD) works a clinical pharmacist specializing in cardiology, oncology, and ambulatory care. He’s a board-certified pharmacotherapy specialist (BCPS), and his experience working one-on-one with patients to fine tune their medication and therapy plans for optimal results makes him a valuable subject matter expert for our pharmacy. Read More....
IMPORTANT NOTE:
The above information is intended to increase awareness of health information and does not suggest treatment or diagnosis. This information is not a substitute for individual medical attention and should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. See your health care professional for medical advice and treatment.
Product Code : 2717