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Nitroglycerin (Nitroglycerin) - Indications and Dosage



Nitroglycerin Extended-Release Capsules are indicated for the prevention of angina pectoris due to coronary artery disease. The onset of action of oral nitroglycerin is not sufficiently rapid for this product to be useful in aborting an acute anginal episode.


As noted above ( CLINICAL PHARMACOLOGY) careful studies with other formulations of nitroglycerin have shown that maintenance of continuous 24-hour plasma levels of nitroglycerin results in tolerance (i.e., loss of clinical response). Every dosing regimen for Nitroglycerin Extended-Release Capsules should provide a daily nitrate-free interval to avoid the development of this tolerance. The minimum necessary length of such an interval has not been defined, but studies with other nitroglycerin formulations have shown that 10 to 12 hours is sufficient. Large controlled studies with other formulations of nitroglycerin show that no dosing regimen with Nitroglycerin Extended-Release Capsules should be expected to provide more than about 12 hours of continuous anti-anginal efficacy per day.

The pharmacokinetics of Nitroglycerin capsules, and the clinical effects of multiple-dose regimens, have not been well studied. In clinical trials, the initial regimen of Nitroglycerin has been 2.5 to 6.5 mg three to four times a day, with subsequent upward dose adjustment guided by symptoms and side effects. In one trial, 5 of the 18 subjects were titrated up to a dose of 26 mg four times a day.


2.5 mg, Nitroglycerin Extended-Release (Pink and Clear capsules imprinted TCL-1221) in bottles of 90. NDC 42291-648-90

6.5 mg, Nitroglycerin Extended-Release (Blue and Yellow capsules imprinted TCL-1222) in bottles of 90. NDC 42291-649-90

9 mg, Nitroglycerin Extended-Release (Green and Yellow capsules imprinted TCL-1223)

Rx only


Store at controlled room temperature 15° - 30° C (59° - 86° F).

Dispense in a tight container, as defined in the USP.

Manufactured for:
AvKARE, Inc.
Pulaski, TN 38478

Revised March 2005

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