Safely Buy Calan SR ( Verapamil ER ) from Canada Prescriptions Plus.

Indications

Calan SR (Sustained Release) is a prescription medication that contains the active ingredient verapamil hydrochloride, which is a calcium channel blocker.

Calan SR is used to treat high blood pressure and certain heart conditions, such as angina (chest pain), arrhythmias (irregular heartbeats), and atrial fibrillation (a type of irregular heartbeat).

Calan SR works by relaxing blood vessels and reducing the workload on the heart, which can help to lower blood pressure and relieve symptoms of heart conditions.

Use and Dosage

Take this medication by mouth with food as directed by your doctor, usually once daily in the morning or every 12 hours.

Do not crush or chew extended-release tablets. Doing so can release the entire drug at once, increasing the risk of side effects. Ask your pharmacist if the tablets may be split in half because the directions depend on the product you take. Swallow the whole or split tablet without crushing or chewing.

The dosage is based on your medical condition and response to treatment.

Take this medication regularly to get the most benefit from it. To help you remember, take it at the same time(s) each day. Keep taking this medication even if you feel well. Most people with high blood pressure do not feel sick.

Do not stop taking this medication without consulting your doctor. Some conditions may become worse when this drug is suddenly stopped. Your dose may need to be gradually decreased.

For the treatment of high blood pressure, it may take a week before you get the full benefit of this drug.

Tell your doctor if your condition does not get better or if it gets worse (for example, your blood pressure readings remain high or increase).

Side Effects

Get emergency medical help if you have signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Call your doctor at once if you have:

• Chest pain
• Fast or slow heart rate
• A light-headed feeling, like you might pass out
• Shortness of breath (even with mild exertion), swelling, or rapid weight gain
• Lung problems–anxiety, sweating, pale skin, wheezing, gasping for breath, or cough with foamy mucus
• Liver problems–loss of appetite, upper stomach pain, tiredness, easy bruising or bleeding, dark urine, clay-colored stools, or jaundice (yellowing of the skin or eyes)

Common side effects may include:

• Constipation
• Headache or dizziness
• Abnormal liver function tests

This is not a complete list of side effects and others may occur.

Cautions

Before taking verapamil, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

Before using this medication, tell your doctor or pharmacist your medical history, especially of: certain types of heart rhythm problems (such as second- or third-degree atrioventricular block, sick sinus syndrome unless you have a pacemaker, Wolff-Parkinson-White syndrome, Lown-Ganong-Levine syndrome), heart failure, certain muscle/nerve disorders (muscular dystrophy, myasthenia gravis), liver disease, kidney disease.

This drug may make you dizzy. Alcohol or marijuana (cannabis) can make you dizzier. Do not drive, use machinery, or do anything that needs alertness until you can do it safely. Limit alcoholic beverages. Talk to your doctor if you are using marijuana (cannabis).

Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).

Older adults may be more sensitive to the side effects of this drug, especially constipation, or swelling ankles/feet.

During pregnancy, this medication should be used only when needed. Discuss the risks and benefits with your doctor.

This medication passes into breast milk but is unlikely to harm a nursing infant. Consult your doctor before breastfeeding.

Form and Strengths

Calan SR is available in the following form and strengths:

Verapamil ER (Extended Release) 24hour ER Capsule:

• 120 mg
• 180 mg
• 240 mg

FAQ

What happens if I miss a dose?

Take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose.

Do not take extra medicine to make up for the missed dose.

What happens if I overdose?

Seek emergency medical attention. An overdose of Calan SR can be fatal.

What should I avoid while taking verapamil?

If you also take disopyramide, avoid taking it within 48 hours before or 24 hours after you take Calan SR.

Calan SR may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be alert.

Avoid getting up too fast from a sitting or lying position, or you may feel dizzy. Get up slowly and steady yourself to prevent a fall.

Drinking alcohol can further lower your blood pressure and may increase certain side effects of verapamil.

Grapefruit and grapefruit juice may interact with Calan SR and lead to potentially dangerous effects. Discuss the use of grapefruit products with your doctor.

Resources:

1. https://www.drugs.com/mtm/calan-sr.html#side-effects
2. https://www.webmd.com/drugs/2/drug-518/calan-sr-oral/details
3. https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=acb6e57b-af44-432f-a4de-a293a2e20121