Χώρα: Ηνωμένες Πολιτείες
Γλώσσα: Αγγλικά
Πηγή: NLM (National Library of Medicine)
PRAZOSIN HYDROCHLORIDE (UNII: X0Z7454B90) (PRAZOSIN - UNII:XM03YJ541D)
PD-Rx Pharmaceuticals, Inc.
ORAL
PRESCRIPTION DRUG
Prazosin hydrochloride capsules 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
Prazosin Hydrochloride Capsules, USP are available containing prazosin hydrochloride, USP equivalent to 5 mg of prazosin. The 5 mg capsules are hard-shell gelatin capsules with a light blue opaque cap and a light brown opaque body filled with a white to off-white powder blend. The capsule is axially printed with MYLAN over 3205 in white ink on both the cap and body. They are available as follows: NDC 43063-248-30 bottles of 30 capsules Store at 20° to 25°C (68° to 77°F). [See USP Controlled Room Temperature.] Protect from moisture and light. Dispense in a tight, light-resistant container as defined by the USP using a child-resistant closure.
Abbreviated New Drug Application
PRAZOSIN HYDROCHLORIDE- PRAZOSIN HYDROCHLORIDE CAPSULE PD-RX PHARMACEUTICALS, INC. ---------- DESCRIPTION Prazosin hydrochloride capsules, USP a quinazoline derivative, is the first of a new chemical class of antihypertensives. It is the hydrochloride salt of 1-(4-amino-6,7- dimethoxy-2-quinazolinyl)-4-(2-furoyl) piperazine and its structural formula is: It is a white to tan powder, slightly soluble in water and methanol, very slightly soluble in alcohol, practically insoluble in chloroform and acetone and has a molecular weight of 419.87. Each capsule, for oral use, contains prazosin hydrochloride, USP equivalent (as the polyhydrate) to 1 mg, 2 mg or 5 mg of prazosin. Inert ingredients in the formulations are: colloidal silicon dioxide, lactose monohydrate, magnesium stearate and microcrystalline cellulose. The empty gelatin capsules contain black iron oxide, gelatin, red iron oxide, titanium dioxide and yellow iron oxide. In addition, the 1 mg empty gelatin capsules contain D&C Yellow No. 10 and FD&C Green No. 3; the 2 mg empty gelatin capsules contain D&C Red No. 28, D&C Yellow No. 10, FD&C Blue No. 1 and FD&C Red No. 40; and the 5 mg empty gelatin capsules contain FD&C Blue No. 1. The imprinting ink also contains ammonium hydroxide, propylene glycol, shellac glaze, simethicone and titanium dioxide. CLINICAL PHARMACOLOGY The exact mechanism of the hypotensive action of prazosin is unknown. Prazosin causes a decrease in total peripheral resistance and was originally thought to have a direct relaxant action on vascular smooth muscle. Recent animal studies, however, have suggested that the vasodilator effect of prazosin is also related to blockade of postsynaptic alpha-adrenoceptors. The results of dog forelimb experiments demonstrate that the peripheral vasodilator effect of prazosin is confined mainly to the level of the resistance vessels (arterioles). Unlike conventional alpha-blockers, the antihypertensive action of prazosin is usually not accompanied by a reflex tachycardia. Tolerance has not been observed Διαβάστε το πλήρες έγγραφο