Isoptin SR (Verapamil) belongs to the class of medications called calcium channel blockers. The sustained release (SR) form of Isoptin SR (Verapamil) is used for the treatment of mild-to-moderate high blood pressure, when beta-blockers or diuretics (water pills) are not recommended or have caused unacceptable side effects.
Available form
Tablet
Manufacturer
Apotex, Bgp Pharma Inc, Dominion Pharmacal, Laboratoire Riva, Mylan Pharmaceuticals
Dosage
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For most conditions, the dose of Isoptin SR (Verapamil) for adults is 80 mg to 120 mg taken 3 or 4 times daily with food. This dose may be increased to a maximum of 480 mg daily. When treating specific conditions where the heart muscle is enlarged and preventing the heart from working efficiently, the dose may be increased to 600 mg or 720 mg of Isoptin SR (Verapamil) divided throughout the day.
If you use the sustained-release (SR) tablets, the recommended dose of Isoptin SR (Verapamil) ranges from 180 mg to 480 mg daily with food. The SR tablets are to be taken once daily if the dose is 240 mg or less. Doses over 240 mg daily of the SR tablets should be taken in 2 divided doses (morning and evening) with food. Do not chew or crush the sustained-release tablets. Do not take more than 480 mg daily.
Many things can affect the dose of medication that a person needs, such as body weight, other medical conditions, and other medications. If your doctor has recommended a dose different from the ones listed here, do not change the way that you are taking the medication without consulting your doctor.
It is important to take Isoptin SR (Verapamil) exactly as prescribed by the doctor. If you miss a dose, take it as soon as possible and continue with your regular schedule. If it is almost time for your next dose, skip the missed dose and continue with your regular dosing schedule. Do not take a double dose to make up for a missed one. If you are not sure what to do after missing a dose, contact your doctor or pharmacist for advice.
Store Isoptin SR (Verapamil) at room temperature, protect it from light and moisture, and keep it out of the reach of children.
Do not dispose of medications in wastewater (e.g. down the sink or in the toilet) or in household garbage. Ask your pharmacist how to dispose of medications that are no longer needed or have expired.
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*Actual pricing may differ. Medication is only available by prescription. The cost may be subsidised by your provincial or private health plan.
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