NEPRO-10/SR-20/SR-40/SR-80 (PROPRANOLOL HCl. CAPSULES)
DESCRIPTION
Propranolol hydrochloride is a synthetic beta-adrenergic receptor blocking agent chemically described as (propanol hydrochloride. Propranolol Structural Formula C16H21NO2HCl M.W. 295.80. Propranolol hydrochloride is a stable, white crystalline solid which is readily soluble in water and ethanol. Propranolol hydrochloride is available as 10 mg, 20 mg, 40 mg and 80 mg tablets for oral administration.
DOSAGE
The usual initial dosage is 40 mg propranolol hydrochloride twice daily, whether used alone or added to a diuretic. Dosage may be increased gradually until adequate blood pressure control is achieved. The usual maintenance dosage is 120 mg to 240 mg per day. In some instances a dosage of 640 mg a day may be required. The time needed for full antihypertensive response to a given dosage is variable and may range from a few days to several weeks.
CLINICAL PHARMACOLOGY
Propranolol is a nonselective beta-adrenergic receptor blocking agent possessing no other autonomic nervous system activity. It specifically competes with beta-adrenergic receptor agonist agents for available receptor sites. When access to beta-receptor sites is blocked by propranolol, the chronotropic, inotropic, and vasodilator responses to beta-adrenergic stimulation are decreased proportionately. At dosages greater than required for beta blockade, propranolol also exerts a quinidine-like or anesthetic-like membrane action, which affects the cardiac action potential.
INDICATIONS
Propranolol hydrochloride tablets are indicated in the management of hypertension. It may be used alone or used in combination with other antihypertensive agents, particularly a thiazide diuretic. Propranolol hydrochloride is not indicated in the management of hypertensive emergencies.
CONTRA INDICATIONS
Propranolol is contraindicated in 1) cardiogenic shock; 2) sinus bradycardia and greater than first degree block; 3) bronchial asthma; and 4) in patients with known hypersensitivity to propranolol hydrochloride.
SIDE EFFECTS
Dizziness, lightheadedness, or tiredness may occur as your body adjusts to the medication. Nausea/vomiting, stomach pain, vision changes, trouble sleeping, and unusual dreams may also occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.This drug may reduce blood flow to your hands and feet, causing them to feel cold. Smoking may worsen this effect.
DRUG INTERACTIONS
Propafenone has negative inotropic and beta-blocking properties that can be additive to those of propranolol. Quinidine increases the concentration of propranolol and produces greater degrees of clinical beta-blockade and may cause postural hypotension. Amiodarone is an antiarrhythmic agent with negative chronotropic properties that may be additive to those seen withsuch as propranolol. The clearance of lidocaine is reduced with administration of propranolol. Lidocaine toxicity has been reported following co-administration with propranolol.
AVAILABILITY
NEPRO-10/SR-20/SR-40/SR-80 is available in strips of ten capsules containing PROPRANOLOL HCL. CAPSULES & TABLETS .
