Phentolamine is a medication that belongs to the class of alpha-adrenergic blockers. Here is a detailed description:
Chemical Name: 3-4-methylphenylamine
Molecular Formula: C17H19N3
Mechanism of Action:
- Phentolamine works by blocking alpha-adrenergic receptors, causing blood vessels to dilate and increasing blood flow.
Indications:
- Hypertension (high blood pressure)
- Pheochromocytoma (a rare tumor of the adrenal gland)
- Vasospasm
- Diagnosis of pheochromocytoma
Pharmacokinetics:
- Absorption: Rapidly absorbed after oral or intravenous administration
- Distribution: Widely distributed throughout the body
- Metabolism: Metabolized in the liver
- Excretion: Excreted in the urine
Side Effects:
- Hypotension (low blood pressure)
- Tachycardia (rapid heart rate)
- Nausea and vomiting
- Headache
- Fatigue
Contraindications:
- Hypersensitivity to Phentolamine
- Coronary artery disease
- Heart failure
- Liver disease
Dosage: avoid self medication
- Oral: 5-20 mg, every 4-6 hours
- Intravenous: 1-5 mg, every 1-2 hours
Forms:
- Tablets
- Injection
Please note that this information is not a substitute for medical advice. If you have any questions or concerns about Phentolamine or any other medication, please consult a healthcare professional.