Manage heart related problems with Calan

Calan is a fast-acting class of drug known as a calcium channel blocker. This medication is taken for angina (chest pain due to clogged cardiac arteries), irregular heartbeat, and high blood pressure.

It works by relaxing the blood vessels, improving blood flow through the heart and throughout the body. In turn, this reduces blood pressure, corrects irregular heartbeat, and helps prevent pain from angina.

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Signs and symptoms of heart related problems

  • Angina – You may experience:
    • Uncomfortable pressure
    • Fullness
    • Squeezing or pain in the center of the chest
  • Irregular heartbeat – A heart that beats too fast or too slow can cause:
    • Palpitations, which can be skipping, fluttering or pounding in the chest
    • Fatigue
    • Chest pressure or pain
    • Shortness of breath
    • Fainting, called syncope
    • Lightheadedness or dizziness
  • High blood pressure – If you develop severe high blood pressure you may have:
    • Headaches
    • Visual disturbances
    • Nausea
    • Vomiting

What does my doctor need to know before prescribing Calan?

Your doctor will need to know about any of the following: if you are pregnant, plan on becoming pregnant, or are breastfeeding; if you are taking any prescription or nonprescription medicine; if you have any other medical conditions; if you are allergic to any ingredient in this medicine or similar medications.

He or she will also need to know if you have any of the following medical conditions:

  • kidney or liver disease;
  • other diseases of the heart or blood vessels such as sick sinus syndrome, aortic stenosis, heart failure, heart disease, heart block, Wolff-Parkinson-White syndrome, coronary artery disease, or low blood pressure; or
  • muscular dystrophy.

What do I need to know about Calan?

If you have high blood pressure, you must take this medicine regularly for the best results. You must continue taking it even if you are feeling well. Calan does not cure high blood pressure; it merely keeps it under control. You may feel tired or rundown for a few weeks after starting this medication. Continue to take your medication even though you may not feel quite “normal.” Contact your doctor about any new symptoms.

If you have angina, do not stop taking this medication suddenly. If Calan is to be discontinued, it should be done gradually. This medication can reduce or eliminate angina pain caused by exertion or exercise. Be sure to discuss with your doctor how much exertion is safe for you.

Dizziness or lightheadedness can occur when rising too quickly form a seated or lying position. If this occurs, sit or lie down and avoid sudden changes in posture. Use caution while driving or performing other tasks requiring alertness, coordination or physical dexterity.

Does Calan have any side effects?

Most severe: Chest pain, low blood pressure, nausea, rash, shortness of breath, slow heartbeat, upper respiratory infection.

Most common: Constipation; dizziness; nausea; headache, blurred vision, breast development in males, bruising, chest pain, confusion, diarrhea, difficulty sleeping, drowsiness, dry mouth, excessive milk secretion, fainting, fatigue, fever and rash, flushing, hair loss, heart attack, hives, impotence, increased urination, indigestion, intestinal blockage, joint pain, light-headedness upon standing up, limping, loss of balance, muscle cramps, pounding heartbeat, rash, ringing in the ears, shakiness, skin peeling, sleepiness, spotty menstruation, sweating, tingling or pins and needles, upset stomach.

This information is advisory only. It does not contain all information about this medication. If you have any questions about Calan, ask your doctor, pharmacist, or health care provider., a Canadian Internet-based pharmacy intermediary (license #BC X23), offers low cost, long-term prescription drugs. A professionally registered pharmacist fills all Canadian prescriptions. A certified member of the Canadian International Pharmacy Association, is ranked as one of the best Canadian pharmacies online.

For more information on how to order your drugs from Canada safely and securely call 1-866-444-6376 or visit– a trusted and reliable Canadian online pharmacy since 2002.


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