Isoptin Sr (Verapamil Hydrochloride)

Verapamil blocks L‑type calcium channels in the heart and vascular smooth muscle. By limiting calcium entry, it reduces the force of heart muscle contraction, slows conduction through the atrioventricular node, and promotes dilation of arterial vessels. These actions collectively lower blood pressure, decrease heart rate, and diminish the workload of the heart.

The exact dose of Isoptin SR is individualized by a qualified prescriber based on the patient’s medical condition, response to therapy, and other medications. Typical regimens may involve once‑daily or twice‑daily dosing, but the prescriber determines the appropriate strength and schedule for each patient.

The safety of Isoptin SR in pregnancy and lactation has not been definitively established, and the product’s pregnancy category is not specified. Healthcare providers should weigh potential benefits against possible risks and consider alternative therapies when treating pregnant or nursing individuals.

To request Isoptin SR, submit an enquiry on the product page at gnhindia.com, specifying the required quantity. GNH India works with hospitals, pharmacies, and procurement teams worldwide, verifies trade or institutional credentials, and then provides pricing, availability, shipping details (including any cold‑chain requirements), and necessary import documentation.

Isoptin SR (verapamil) primarily affects cardiac conduction and contractility, making it useful for arrhythmias and angina, whereas agents such as amlodipine have a stronger peripheral vasodilatory effect and are often chosen for isolated hypertension. Diltiazem shares some cardiac properties with verapamil but generally has a milder negative inotropic effect.

Store Isoptin SR tablets at ambient temperature, preferably below 25 °C, in the original container to protect them from moisture and direct sunlight. Keep the medication out of reach of children and avoid exposing it to extreme heat or humidity, which could affect tablet integrity.

Isoptin SR is taken orally, usually with a full glass of water. It can be administered with or without food, but consistent intake with respect to meals helps maintain stable plasma concentrations. Patients should swallow the sustained‑release tablet whole and not split, chew, or crush it.

Serious adverse events include marked bradycardia, severe hypotension, atrioventricular block, and worsening of heart failure. Patients should be alert for symptoms such as fainting, unusually slow heartbeat, chest discomfort, or sudden swelling of the legs, and seek immediate medical attention if these occur.

Isoptin SR is contraindicated in individuals with severe hypotension, advanced atrioventricular block (second‑ or third‑degree) without a pacemaker, cardiogenic shock, or known hypersensitivity to verapamil or any excipients. Caution is also advised for patients with significant heart failure, hepatic impairment, or those taking interacting medications.