1. INDICATIONS AND USAGE
Amlodipine besylate, USP is a calcium channel blocker and may be used alone or in combination with other antihypertensive and antianginal agents for the treatment of:
Hypertension (1.1)
o Amlodipine besylate tablets, USP are indicated for the treatment of hypertension, to lower blood pressure. Lowering blood pressure reduces the risk of fatal and nonfatal cardiovascular events, primarily strokes and myocardial infarctions.
Coronary Artery Disease (1.2)
o Chronic Stable Angina
o Vasospastic Angina (Prinzmetals or Variant Angina)
o Angiographically Documented Coronary Artery Disease in patients without heart failure or an ejection fraction < 40%
1.1. Hypertension
Amlodipine besylate tablets, USP are indicated for the treatment of hypertension, to lower blood pressure. Lowering blood pressure reduces the risk of fatal and nonfatal cardiovascular events, primarily strokes and myocardial infarctions. These benefits have been seen in controlled trials of antihypertensive drugs from a wide variety of pharmacologic classes including amlodipine besylate tablets.
Control of high blood pressure should be part of comprehensive cardiovascular risk management, including, as appropriate, lipid control, diabetes management, antithrombotic therapy, smoking cessation, exercise, and limited sodium intake. Many patients will require more than one drug to achieve blood pressure goals. For specific advice on goals and management, see published guidelines, such as those of the National High Blood Pressure Education Programs Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure (JNC).
Numerous antihypertensive drugs, from a variety of pharmacologic classes and with different mechanisms of action, have been shown in randomized controlled trials to reduce cardiovascular morbidity and mortality, and it can be concluded that it is blood pressure reduction, and not some other pharmacologic property of the drugs, that is largely responsible for those benefits. The largest and most consistent cardiovascular outcome benefit has been a reduction in the risk of stroke, but reductions in myocardial infarction and cardiovascular mortality also have been seen regularly.
Elevated systolic or diastolic pressure causes increased cardiovascular risk, and the absolute risk increase per mmHg is greater at higher blood pressures, so that even modest reductions of severe hypertension can provide substantial benefit. Relative risk reduction from blood pressure reduction is similar across populations with varying absolute risk, so the absolute benefit is greater in patients who are at higher risk independent of their hypertension (for example, patients with diabetes or hyperlipidemia), and such patients would be expected to benefit from more aggressive treatment to a lower blood pressure goal.
Some antihypertensive drugs have smaller blood pressure effects (as monotherapy) in black patients, and many antihypertensive drugs have additional approved indications and effects (e.g., on angina, heart failure, or diabetic kidney disease). These considerations may guide selection of therapy.
Amlodipine besylate tablets may be used alone or in combination with other antihypertensive agents.
1.2. Coronary Artery Disease (CAD)
Chronic Stable Angina
Amlodipine besylate tablets, USP are indicated for the symptomatic treatment of chronic stable angina. Amlodipine besylate tablets, USP may be used alone or in combination with other antianginal agents.
Vasospastic Angina (Prinzmetals or Variant Angina)
Amlodipine besylate tablets, USP are indicated for the treatment of confirmed or suspected vasospastic angina. Amlodipine besylate tablets, USP may be used as monotherapy or in combination with other antianginal agents.
Angiographically Documented CAD
In patients with recently documented CAD by angiography and without heart failure or an ejection fraction <40%, amlodipine besylate tablets, USP are indicated to reduce the risk of hospitalization for angina and to reduce the risk of a coronary revascularization procedure.