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(verapamil hydrochloride) Capsules
- Patient Information:
Details with Side Effects
Verelan® (verapamil hydrochloride capsules) is a calcium ion influx inhibitor (slow channel blocker or calcium ion antagonist). Verelan is available for oral administration as a 360 mg hard gelatin capsule (lavender cap/yellow body), a 240 mg hard gelatin capsule (dark blue cap/yellow body), a 180 mg hard gelatin capsule (light grey cap/yellow body), and a 120 mg hard gelatin capsule (yellow cap/yellow body). These pellet filled capsules provide a sustained-release of the drug in the gastrointestinal tract. The structural formula of verapamil HCl is given below:
C27H38N2O4 •HCl M.W. = 491.0 7
Chemical name: Benzeneacetonitrile, α-[3-[[2-(3,4-dimethoxyphenyl)-ethyl]methylamino]propyl]-3,4-dimethoxy-α-(1-methylethyl), monohydrochloride.
Verapamil HCl is an almost white, crystalline powder, practically free of odor, with a bitter taste. It is soluble in water, chloroform and methanol. Verapamil HCl is not structurally related to other cardioactive drugs. In addition to verapamil HCl the Verelan capsule contains the following inactive ingredients: fumaric acid, talc, sugar spheres, povidone, shellac, gelatin, FD&C red #40, yellow iron oxide, titanium dioxide, methylparaben, propylparaben, silicon dioxide, and sodium lauryl sulfate. In addition, the Verelan 240 mg and 360 mg capsules contain FD&C blue #1 and D&C red #28; and the Verelan 180 mg capsule contains black iron oxide.
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...
Last reviewed on RxList: 11/28/2011
This monograph has been modified to include the generic and brand name in many instances.
Additional Verelan Information
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.
Get tips on handling your hypertension.