Bufuralol

Overview of the beta-blocker Bufuralol

Bufuralol

Bufuralol is a beta-adrenergic receptor antagonist used primarily in the treatment of hypertension and certain types of cardiac arrhythmias. It is a non-selective beta-blocker, meaning it affects both beta-1 and beta-2 receptors.

Pharmacology

Bufuralol works by blocking the action of epinephrine and norepinephrine on beta-adrenergic receptors, which are part of the sympathetic nervous system. This action results in a decrease in heart rate, cardiac output, and blood pressure, making it effective in managing hypertension and arrhythmias.

Mechanism of Action

Bufuralol binds to beta-adrenergic receptors, preventing the usual binding of catecholamines. This inhibition reduces the effects of sympathetic nervous system stimulation, leading to decreased heart rate and myocardial contractility. The drug's non-selective nature means it can also affect beta-2 receptors, which are found in the bronchi and vascular smooth muscle.

Clinical Use

Bufuralol is used in the management of:

• Hypertension
• Angina pectoris
• Certain types of arrhythmias

Side Effects

Common side effects of bufuralol include:

• Bradycardia
• Hypotension
• Fatigue
• Dizziness

Less common but more serious side effects can include:

• Bronchospasm
• Heart failure
• Depression

Metabolism

Bufuralol is metabolized primarily in the liver by the cytochrome P450 enzyme system, particularly by CYP2D6. This enzyme is known for its genetic polymorphism, which can lead to variability in drug metabolism among different individuals.

Chemical Structure

Chemical structure of Bufuralol

Bufuralol is a racemic mixture, meaning it contains two enantiomers. The chemical structure includes a phenyl group and a butyl side chain, which are characteristic of many beta-blockers.

Related pages

• Beta blocker
• Adrenergic receptor
• Hypertension
• Arrhythmia