Comparative Pharmacology
Head-to-head clinical analysis: BREVIBLOC DOUBLE STRENGTH IN PLASTIC CONTAINER versus PROPRANOLOL HYDROCHLORIDE AND HYDROCHLOROTHIAZIDE.
Peer-Reviewed Evidence
Head-to-head clinical analysis: BREVIBLOC DOUBLE STRENGTH IN PLASTIC CONTAINER versus PROPRANOLOL HYDROCHLORIDE AND HYDROCHLOROTHIAZIDE.
BREVIBLOC DOUBLE STRENGTH IN PLASTIC CONTAINER vs PROPRANOLOL HYDROCHLORIDE AND HYDROCHLOROTHIAZIDE
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Selective beta-1 adrenergic receptor antagonist; reduces heart rate, myocardial contractility, and blood pressure by blocking catecholamine effects at beta-1 receptors.
Propranolol is a nonselective beta-adrenergic receptor antagonist that blocks beta-1 and beta-2 receptors, decreasing heart rate, myocardial contractility, and blood pressure. Hydrochlorothiazide is a thiazide diuretic that inhibits the sodium-chloride symporter in the distal convoluted tubule, increasing excretion of sodium and water.
Intravenous: For stable patients, an initial loading dose of 500 mcg/kg/min over 1 minute followed by a maintenance infusion of 50 mcg/kg/min for 4 minutes; if response is inadequate, increase maintenance infusion to 100 mcg/kg/min and repeat loading dose after 10 minutes. Titrate in 50 mcg/kg/min increments up to 200 mcg/kg/min. For intraoperative and postoperative use, see full prescribing information.
Oral: 1 tablet (propranolol 40 mg / hydrochlorothiazide 25 mg) twice daily or as needed to control blood pressure; maximum propranolol 320 mg/day.
None Documented
None Documented
Terminal elimination half-life is approximately 9 minutes (range 8–10 minutes). Clinically, the half-life is consistent with rapid offset of effect upon discontinuation; steady state is achieved within 30 minutes of continuous infusion.
Propranolol: 3-6 hours (terminal) with significant interindividual variability; prolonged in hepatic impairment (up to 11 hours). Hydrochlorothiazide: 6-15 hours (terminal); prolonged in renal impairment (creatinine clearance <30 mL/min).
Primarily metabolized by red blood cell esterases; <1% excreted unchanged in urine. Elimination is not dependent on renal or hepatic function.
Propranolol: <1% unchanged in urine; extensively metabolized in liver, metabolites (4-hydroxypropanolol and others) excreted renally (90%) and fecally (10%). Hydrochlorothiazide: >95% renally excreted unchanged; negligible biliary/fecal elimination.
Category C
Category C
Beta-Blocker
Beta-Blocker