Država: Sjedinjene Američke Države
Jezik: engleski
Izvor: NLM (National Library of Medicine)
PROPAFENONE HYDROCHLORIDE (UNII: 33XCH0HOCD) (PROPAFENONE - UNII:68IQX3T69U)
Mylan Institutional Inc.
PROPAFENONE HYDROCHLORIDE
PROPAFENONE HYDROCHLORIDE 150 mg
PRESCRIPTION DRUG
Abbreviated New Drug Application
PROPAFENONE HYDROCHLORIDE- PROPAFENONE HYDROCHLORIDE TABLET, FILM COATED MYLAN INSTITUTIONAL INC. ---------- PROPAFENONE HYDROCHLORIDE TABLETS RX ONLY DESCRIPTION Propafenone hydrochloride is an antiarrhythmic drug supplied in scored, film-coated tablets of 150, 225 and 300 mg for oral administration. Propafenone has some structural similarities to beta-blocking agents. The structural formula of propafenone hydrochloride is given below: 2'-[2-Hydroxy-3-(propylamino)-propoxy]-3-phenylpropiophenone hydrochloride Propafenone hydrochloride occurs as colorless crystals or white crystalline powder with a very bitter taste. It is slightly soluble in water (20°C), chloroform and ethanol. The following inactive ingredients are contained in the tablet: carnauba wax, hypromellose, magnesium stearate, polydextrose, polyethylene glycol, polysorbate 80, povidone, pregelatinized starch (corn), propylene glycol, sodium starch glycolate, titanium dioxide, and triacetin. CLINICAL PHARMACOLOGY MECHANISM OF ACTION Propafenone is a Class 1C antiarrhythmic drug with local anesthetic effects, and a direct stabilizing action on myocardial membranes. The electrophysiological effect of propafenone manifests itself in a reduction of upstroke velocity (Phase 0) of the monophasic action potential. In Purkinje fibers, and to a lesser extent myocardial fibers, propafenone reduces the fast inward current carried by sodium ions. Diastolic excitability threshold is increased and effective refractory period prolonged. Propafenone reduces spontaneous automaticity and depresses triggered activity. Studies in anesthetized dogs and isolated organ preparations show that propafenone has beta- sympatholytic activity at about 1/50 the potency of propranolol. Clinical studies employing isoproterenol challenge and exercise testing after single doses of propafenone indicate a beta- adrenergic blocking potency (per mg) about 1/40 that of propranolol in man. In clinical trials, resting heart rate decreases of about 8% were noted at the higher end of the thera Pročitajte cijeli dokument