Norvasc (Amlodipine Besylate) Drug Information: Description, User Reviews, Drug Side Effects, Interactions

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February 22, 2012

Norvasc

Angina »

Introduction to angina

Chest pain is a common symptom that is caused by many different conditions. Some causes require prompt medical attention, such as angina, heart attack, or tearing of the aorta. Other causes of chest pain that may not require immediate medical intervention include spasm of the esophagus, gallbladder attack, or inflammation of the chest wall. An accurate diagnosis is important in providing proper treatment to patients with chest pain.

The diagnosis and treatment of angina is discussed below, as well as the diagnosis of other causes of chest pain that can mimic angina.

What is angina, and what are the symptoms of angina?

Angina (angina pectoris - Latin for squeezing of the chest) is chest discomfort that occurs when there is a decreased blood oxygen supply to an area of the heart muscle. In most cases, the lack of blood supply is due to a narrowing of the coronary arteries as a result of arterioscler...

Read the Angina article »

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NORVASC®
(amlodipine besylate) Tablets for oral administration

DRUG DESCRIPTION

NORVASC is the besylate salt of amlodipine, a long-acting calcium channel blocker.

Amlodipine besylate is chemically described as 3-Ethyl-5-methyl (±)-2-[(2-aminoethoxy)methyl]-4-(2-chlorophenyl)-l,4-dihydro-6-methyl-3,5-pyridinedicarboxylate, monobenzenesulphonate. Its empirical formula is C₂₀H₂₅CIN₂O₅•C₆H₆O₃S, and its structural formula is:

NORVASC®
(amlodipine besylate) Structural Formula Illustration

Amlodipine besylate is a white crystalline powder with a molecular weight of 567.1. It is slightly soluble in water and sparingly soluble in ethanol. NORVASC (amlodipine besylate) Tablets are formulated as white tablets equivalent to 2.5, 5, and 10 mg of amlodipine for oral administration. In addition to the active ingredient, amlodipine besylate, each tablet contains the following inactive ingredients: microcrystalline cellulose, dibasic calcium phosphate anhydrous, sodium starch glycolate, and magnesium stearate.

What are the possible side effects of amlodipine (Norvasc)?

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 a serious side effect such as:

feeling like you might pass out;
swelling in your hands, ankles, or feet;
chest pain;
slow, fast, or pounding heartbeats;
easy bruising or bleeding, unusual weakness;
numbness, burning, pain, or tingly feeling; or
jaundice...

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What are the precautions when taking amlodipine besylate (Norvasc)?

Before taking amlodipine, tell your doctor or pharmacist if you are allergic to it; or to other dihydropyridine calcium channel blockers (such as nisoldipine, nifedipine) 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: a certain structural heart problem (aortic stenosis), very low blood pressure, liver disease.

This drug may make you dizzy. Do not drive, use machinery, or do any activity that requires alertness until you are sure you can perform such activities safely. Limit alcoholic beverages.

Before having surgery, tell your doctor or...

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Last reviewed on RxList: 11/14/2011
This monograph has been modified to include the generic and brand name in many instances.