Description

Description

Calan SR 240mg is a sustained-release cardiovascular medicine manufactured by Searle, formulated with Verapamil Hydrochloride as its active ingredient. It belongs to the calcium channel blocker class and is specifically designed to release the medication gradually over time, allowing for more stable blood levels and typically once-daily dosing. This pack contains 10 tablets, each carrying a 240mg dose. Calan SR is primarily prescribed for managing high blood pressure, and its extended-release design helps maintain consistent therapeutic effects throughout the day, reducing fluctuations that can occur with immediate-release formulations.

Ingredients

Each Calan SR tablet contains Verapamil Hydrochloride at a strength of 240mg, formulated in a sustained-release caplet form. This design allows the medication to be released slowly within the gastrointestinal tract, extending its duration of action. Verapamil works by blocking calcium channels in cardiac and smooth muscle cells, which relaxes blood vessels, reduces heart contractility, and helps lower blood pressure over a sustained period. The tablet also contains standard inactive excipients that support the sustained-release mechanism and overall tablet stability.

Dosage Form

Calan SR is available as an oral, sustained-release, film-coated tablet, supplied in a pack of 10 tablets. Its formulation is specifically designed for once-daily administration, offering steady drug release rather than the more frequent dosing required by immediate-release verapamil products.

Uses

Calan SR is primarily used to manage high blood pressure, helping reduce the long-term risks of complications such as stroke, heart attack, and kidney problems associated with uncontrolled hypertension. Because of its extended-release nature, it is particularly suited for patients seeking simplified once-daily dosing for consistent blood pressure control. In some cases, it may also be used to support management of certain heart rhythm irregularities, based on individual medical assessment.

How to Use

Calan SR tablets should be taken exactly as prescribed by a physician, generally once daily, preferably in the morning or with food to help optimize absorption. The tablet should be swallowed whole with a full glass of water and should not be crushed or chewed, as this could interfere with its sustained-release mechanism. If a dose is missed, it should be taken as soon as remembered, unless it is close to the time for the next dose, in which case the missed dose should be skipped rather than doubled. Calan SR should not be discontinued suddenly without medical guidance.

Side Effects

Patients taking Calan SR may experience side effects such as dizziness, headache, fatigue, or constipation, which remains a commonly reported effect associated with verapamil. Some individuals may also notice low blood pressure, a slower heart rate, or mild swelling in the lower limbs. In cases of overdose or excessive dosing, more significant drops in blood pressure leading to dizziness or fainting can occur, which requires prompt medical attention. Any severe or persistent symptoms should be reported to a doctor without delay.

Pregnancy & Breastfeeding

Calan SR should only be used during pregnancy if a physician determines it is clearly necessary, after carefully considering potential risks and benefits. Since verapamil is known to pass into breast milk, breastfeeding is generally not recommended while using this medicine unless specifically advised by a healthcare provider.

Storage Instructions

Store Calan SR tablets at room temperature, away from direct sunlight, moisture, and excessive heat. Keep the tablets in their original packaging until ready for use to preserve their sustained-release properties. Keep the medicine out of reach of children, and do not use tablets beyond their printed expiry date.

FAQS

Why is Calan SR taken only once daily compared to regular Calan?
Its sustained-release formulation allows the medicine to be released gradually, providing steady effects with less frequent dosing.

Can Calan SR tablets be crushed or split?
No, they are designed for gradual release and should be swallowed whole to maintain their intended effect.

What should I do if I miss a dose of Calan SR?
Take it as soon as you remember, but skip it if it’s close to your next scheduled dose; never double the dose.

Is Calan SR safe for long-term blood pressure management?
Yes, it is commonly used for long-term hypertension control under regular medical supervision.

Disclaimer

Always use this medicine strictly according to your doctor’s instructions and prescribed dosage.