Drug Catalog - Product Detail
DOXAZOSIN MESYLATE 8MG TB 100
| NDC | Mfr | Size | Str | Form |
|---|---|---|---|---|
| 16729-0415-01 | ACCORD HEALTHCARE | 100 | 8MG | TABLET |
PACKAGE FILES
Generic Name
DOXAZOSIN
Substance Name
DOXAZOSIN MESYLATE
Product Type
HUMAN PRESCRIPTION DRUG
Route
ORAL
Application Number
ANDA202824
Description
11 DESCRIPTION Doxazosin is a quinazoline compound that is a selective inhibitor of the alpha 1 subtype of alpha-adrenergic receptors. The chemical name of doxazosin mesylate is 1-(4-amino-6,7-dimethoxy-2-quinazolinyl)-4-(1,4-benzodioxan-2-ylcarbonyl) piperazine methanesulfonate. The empirical formula for doxazosin mesylate is C 23 H 25 N 5 O 5 •CH 4 O 3 S and the molecular weight is 547.6. It has the following structure: Doxazosin is freely soluble in dimethylsulfoxide, soluble in dimethylformamide, slightly soluble in methanol, ethanol, and water (0.8% at 25°C), and very slightly soluble in acetone and methylene chloride. Doxazosin tablets, USP are available as colored tablets for oral use and contains doxazosin mesylate equivalent to 1 mg (white to off white), 2 mg (cream to yellow), 4 mg (cream to yellow) and 8 mg (white to off white) of doxazosin as the free base. The inactive ingredients for all tablets are: lactose monohydrate, microcrystalline cellulose, sodium lauryl sulfate, magnesium stearate and sodium starch glycolate. The 2 mg & 4 mg tablet contains ferric oxide yellow. Chemical Structure
How Supplied
16 HOW SUPPLIED/STORAGE AND HANDLING Doxazosin tablets, USP are available as functionally scored tablets for oral administration. Each tablet contains doxazosin mesylate equivalent to 1 mg (white to off white), 2 mg (cream to yellow), 4 mg (cream to yellow) or 8 mg (white to off white) of doxazosin as the free base. 1 mg: White to off white, round, biconvex uncoated tablets, debossed with “C3” on one side and breakline on other side and supplied as follows: NDC 16729-211-01 Bottle of 100’s count with a child resistant closure NDC 16729-211-17 Bottle of 1000 2 mg: Cream to yellow colored, round, biconvex uncoated tablets, debossed with “C7” on one side and breakline on other side, may have mottled appearance and supplied as follows: NDC 16729-414-01 Bottle of 100’s count with a child resistant closure NDC 16729-414-17 Bottle of 1000 4 mg: Cream to yellow colored, round, biconvex uncoated tablets, debossed with “C4” on one side and breakline on other side, may have mottled appearance and supplied as follows: NDC 16729-213-01 Bottle of 100’s count with a child resistant closure NDC 16729-213-17 Bottle of 1000 8 mg: White to off white, round, biconvex uncoated tablets, debossed with “C5” on one side and breakline on other side and supplied as follows: NDC 16729-415-01 Bottle of 100’s count with a child resistant closure NDC 16729-415-17 Bottle of 1000 Recommended Storage: Store at 20°C to 25°C (68°F to 77°F); excursions permitted to 15°C to 30°C (59°F to 86°F) [see USP Controlled Room Temperature].
Indications & Usage
1 INDICATIONS AND USAGE Doxazosin tablets, USP are an alpha 1 adrenergic antagonist indicated for: Signs and symptoms of Benign Prostatic Hyperplasia (BPH) Treatment of Hypertension 1.1 Benign Prostatic Hyperplasia (BPH) Doxazosin tablets, USP are indicated for the treatment of the signs and symptoms of BPH. 1.2 Hypertension Doxazosin 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 this drug. 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 Program’s 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. Doxazosin tablets, USP may be used alone or in combination with other antihypertensives.
Dosage and Administration
2 DOSAGE AND ADMINISTRATION For the treatment of BPH: Initiate therapy at 1 mg once daily. Dose may be titrated at 1 to 2-week intervals, up to 8 mg once daily. ( 2.2 ) For the treatment hypertension: Initiate therapy at 1 mg once daily. Dose may be titrated as needed, up to 16 mg once daily. ( 2.3 ) 2.1 Dosing Information Following the initial dose and with each dose increase of doxazosin tablets, monitor blood pressure for at least 6 hours following administration. If doxazosin tablets administration is discontinued for several days, therapy should be restarted using the initial dosing regimen. 2.2 Benign Prostatic Hyperplasia The recommended initial dosage of doxazosin tablets is 1 mg given once daily either in the morning or evening. Depending on the individual patient’s urodynamics and BPH symptomatology, the dose may be titrated at 1 to 2 week intervals to 2 mg, and thereafter to 4 mg and 8 mg once daily. The maximum recommended dose for BPH is 8 mg once daily. Routinely monitor blood pressure in these patients. 2.3 Hypertension The initial dosage of doxazosin tablets is 1 mg given once daily. Daily dosage may be doubled up 16 mg once daily, as needed, to achieve the desired reduction in blood pressure.