Pacet 200 mg contains Amiodarone Hydrochloride, a broad-spectrum antiarrhythmic medication used for the management of serious and life-threatening cardiac rhythm disorders. It is effective in controlling both ventricular and supraventricular arrhythmias and is widely prescribed when other antiarrhythmic therapies are ineffective or contraindicated. Pacet 200 mg plays a crucial role in stabilizing cardiac rhythm and reducing the risk of sudden cardiac complications.

রেজিস্টার্ড চিকিৎসকের পরামর্শ অনুযায়ী ঔষধ সেবন করুন

Composition

• Active ingredient: Amiodarone Hydrochloride 200 mg

• Dosage form: Tablet

Therapeutic Class

• Potassium channel blocker

• Antiarrhythmic agent (Class III)

Pharmacology and Mode of Action

Amiodarone exhibits complex electrophysiological effects on cardiac tissue. Its primary action is prolongation of the myocardial action potential duration and refractory period across all cardiac fibers. It also demonstrates non-competitive antagonism of alpha- and beta-adrenergic receptors, contributing to its antiarrhythmic efficacy.

Pacet 200 mg slows cardiac conduction, reduces automaticity of the sinoatrial node, and prolongs PR and QT intervals. These effects help suppress abnormal electrical impulses responsible for arrhythmias. Additionally, Amiodarone causes peripheral vasodilation, which may provide benefit in patients with associated congestive heart failure, though it may also lead to blood pressure reduction.

Indications

Pacet 200 mg is indicated for the treatment and prevention of serious cardiac arrhythmias, including:

• Ventricular fibrillation (VF)

• Ventricular tachycardia (VT)

• Atrial fibrillation and atrial flutter

• Prophylaxis of recurrent, life-threatening ventricular arrhythmias in patients refractory to other antiarrhythmic therapies

Injectable Amiodarone is indicated for initiation of treatment and prophylaxis of frequently recurring VF and hemodynamically unstable VT.

Dosage and Administration

• Oral dosage:

  • 200 mg three times daily for 1 week

  • Reduced to 200 mg twice daily or the minimum effective dose required to control arrhythmia

  • Tablets should be taken with meals to minimize gastrointestinal discomfort

• Injection dosage:

  • Initial loading dose of 150 mg infused over 10 minutes

  • Followed by 1 mg/min for 6 hours

  • Then 0.5 mg/min as maintenance infusion

  • Additional loading doses may be administered for breakthrough arrhythmias

Dosage adjustments should be individualized and supervised by a cardiologist.

Drug Interactions

Pacet 200 mg may interact with beta-blockers, calcium channel blockers, digoxin, warfarin, flecainide, procainamide, quinidine, tricyclic antidepressants, and dextromethorphan. These interactions may increase the risk of bradycardia, bleeding, or elevated drug concentrations, requiring careful monitoring and dose adjustments.

রেজিস্টার্ড চিকিৎসকের পরামর্শ অনুযায়ী ঔষধ সেবন করুন

Contraindications

Pacet 200 mg is contraindicated in patients with:

• Cardiogenic shock

• Severe sinus node dysfunction

• Second- or third-degree atrioventricular block (without pacemaker)

• Known hypersensitivity to Amiodarone or iodine

Side Effects

Serious adverse effects may involve the lungs, liver, thyroid, heart, eyes, skin, and nervous system. Commonly reported reactions include bradycardia, gastrointestinal upset, photosensitivity, thyroid dysfunction, corneal microdeposits, and fatigue. Rare but severe reactions may necessitate dose reduction or discontinuation.

Pregnancy and Lactation

Pacet 200 mg should not be used during pregnancy or lactation due to the risk of fetal and neonatal thyroid disorders.

Storage

• Store below 30°C

• Protect from light and moisture

• Keep out of reach of children

Pacet 200 mg is a powerful and effective antiarrhythmic therapy for managing complex cardiac rhythm disorders. When used under strict medical supervision, it offers reliable rhythm control and improved cardiovascular stability in high-risk patients.