Isoptin

Verapamil Hydrochloride, the active ingredient in Isoptin, is a calcium channel blocker presented as an oral tablet for oral use. It treats hypertension, angina pectoris and certain supraventricular tachyarrhythmias in adult patients.

GNH USA supplies Isoptin as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.

Isoptin is a calcium channel blocker used to manage cardiovascular conditions that involve elevated vascular tone or abnormal cardiac conduction.

- Hypertension: lowers systemic blood pressure by causing arterial vasodilation. - Angina pectoris: reduces frequency and severity of chest pain by decreasing myocardial oxygen demand. - Supraventricular tachyarrhythmias (e.g., atrial fibrillation, atrial flutter): helps control heart rate and may restore normal rhythm.

Common Side Effects: - Constipation - Headache - Dizziness - Peripheral edema

Serious or Rare Side Effects: - Bradycardia - Severe hypotension - Heart block - Allergic reactions such as rash or angioedema - Hepatic dysfunction

Before initiating therapy, consider the following precautions: - Monitor blood pressure regularly: ensure adequate control and avoid excessive drops. - Monitor heart rate: watch for bradycardia, especially in patients with pre‑existing conduction disorders. - Use caution in heart failure: verapamil may worsen ventricular function. - Avoid in severe hepatic impairment: metabolism is reduced, increasing exposure. - Adjust dose in renal impairment: excretion may be altered. - Store at room temperature: keep in the original container, protect from moisture and direct sunlight.

Verapamil can interact with several medicines; awareness helps prevent adverse outcomes.

Major Interactions (Avoid): - Beta‑blockers: additive bradycardia and AV‑node block. - Digoxin: increased serum digoxin levels, raising toxicity risk. - Strong CYP3A4 inhibitors (e.g., clarithromycin, ketoconazole): elevate verapamil concentrations.

Moderate Interactions (Monitor Closely):\n- Diuretics: may cause electrolyte shifts affecting cardiac rhythm. - Statins metabolised by CYP3A4 (e.g., simvastatin): higher risk of myopathy, monitor levels.