"What are calcium channel blockers (CCBs) and how do they work?
Calcium channel blockers are drugs that block the entry of calcium into the muscle cells of the heart and arteries.
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Calan Patient Information Including Side Effects
Brand Names: Calan, Calan SR, Covera-HS, Isoptin SR, Verelan, Verelan PM
Generic Name: verapamil (oral) (Pronunciation: ver AP a mil)
- What is verapamil (Calan)?
- What are the possible side effects of verapamil?
- What is the most important information I should know about verapamil?
- What should I discuss with my healthcare provider before taking verapamil?
- How should I take verapamil?
- What happens if I miss a dose?
- What happens if I overdose?
- What should I avoid while taking verapamil?
- What other drugs will affect verapamil?
- Where can I get more information?
What is verapamil (Calan)?
Verapamil is in a group of drugs called calcium channel blockers. It works by relaxing the muscles of your heart and blood vessels.
Verapamil is used to treat hypertension (high blood pressure), angina (chest pain), and certain heart rhythm disorders.
Verapamil may also be used for other purposes not listed in this medication guide.
Calan 40 mg
round, pink, imprinted with 40, CALAN
Calan 80 mg
oval, peach, imprinted with 80, CALAN
Calan SR 120 mg
oval, lavender, imprinted with CALAN, SR120
Calan SR 180 mg
oval, pink, imprinted with CALAN, SR180
Calan SR 240 mg
oblong, green, imprinted with CALAN, SR 240
Covera HS 180 mg
round, pink, imprinted with COVERA-HS 2011
Covera HS 240 mg
round, yellow, imprinted with COVERA-HS 2021
Isoptin SR 180 mg
elliptical, pink, imprinted with ISOPTIN SR, 180 MG
Verapamil 120 mg ER-IVA
round, beige, imprinted with 120, LOGO
Verapamil 120 mg ER-MYL
green/white, imprinted with MYLAN 6320
Verapamil 120 mg SR-WAT
yellow, imprinted with 60274, 120mg
Verapamil 120 mg Tab-MYL
oval, blue, imprinted with 244, MYLAN
Verapamil 120 mg-MYL
round, white, imprinted with MYLAN 772
Verapamil 120 mg-WAT
round, white, imprinted with WATSON 345
Verapamil 180 mg ER-IVA
oblong, orange, imprinted with 73 01, LOGO
Verapamil 180 mg ER-MYL
dark green/light green, imprinted with MYLAN 6380
Verapamil 180 mg ER-SCH
oblong, orange, imprinted with LOGO, 7301
Verapamil 240 mg ER-IVA
oblong, white, imprinted with 73 00, LOGO
Verapamil 240 mg ER-MYL
green, imprinted with MYLAN 6440
Verapamil 40 mg-WAT
round, orange, imprinted with WATSON 404
Verapamil 80 mg-MYL
round, white, imprinted with MYLAN 512
Verapamil 80 mg-WAT
round, white, imprinted with WATSON 343
Verapamil ER 180 mg-MYL
Verapamil ER 240 mg-MYL
oblong, blue, imprinted with M 411
Verapamil SR 180 mg-WAT
gray/yellow, imprinted with 60274, 180 mg
Verapamil SR 240 mg-WAT
blue/yellow, imprinted with 60274, 240 mg
Verapamil SR 360 mg-WAT
lavender/yellow, imprinted with 60274, 360 mg
What are the possible side effects of verapamil?
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Call your doctor at once if you have any of these serious side effects:
- fast or slow heartbeats;
- feeling like you might pass out;
- fever, sore throat, and headache with a severe blistering, peeling, and red skin rash;
- restless muscle movements in your eyes, tongue, jaw, or neck;
- feeling short of breath, even with mild exertion;
- swelling, rapid weight gain; or
- nausea, stomach pain, low fever, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes).
Less serious side effects may include:
- constipation, nausea;
- skin rash or itching;
- dizziness, headache, tired feeling; or
- warmth, itching, redness, or tingly feeling under your skin.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
Read the Calan (verapamil hcl) Side Effects Center for a complete guide to possible side effects »
What is the most important information I should know about verapamil?
You should not use verapamil if you are allergic to it, or if you have certain serious heart conditions such as "sick sinus syndrome" or "AV block" (unless you have a pacemaker), low blood pressure, or if you have recently had a heart attack.
Before taking verapamil, tell your doctor if you are allergic to any drugs, or if you have kidney disease, liver disease, congestive heart failure, or a nerve-muscle disorder such as myasthenia gravis or muscular dystrophy.
Verapamil may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be alert.
Do not stop taking this medication without first talking to your doctor. If you stop taking verapamil suddenly, your condition may become worse.
Verapamil may be only part of a complete program of treatment that also includes diet, exercise, and other medications. Follow your diet, medication, and exercise routines very closely.
If you are being treated for high blood pressure, keep using this medication even if you feel well. High blood pressure often has no symptoms. You may need to use blood pressure medication for the rest of your life.
Additional Calan Information
Calan - User Reviews
Calan User Reviews
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Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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