Comparative Pharmacology
Head-to-head clinical analysis: INDERIDE 80 25 versus METAHYDRIN.
Peer-Reviewed Evidence
Head-to-head clinical analysis: INDERIDE 80 25 versus METAHYDRIN.
INDERIDE-80/25 vs METAHYDRIN
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
INDERIDE-80/25 is a combination of propranolol (a non-selective beta-adrenergic receptor antagonist) and hydrochlorothiazide (a thiazide diuretic). Propranolol blocks beta-1 and beta-2 adrenergic receptors, reducing heart rate, myocardial contractility, and renin release, thereby lowering blood pressure. Hydrochlorothiazide inhibits the sodium-chloride symporter in the distal convoluted tubule of the kidney, increasing excretion of sodium, chloride, and water, reducing plasma volume.
Metahydrin (trichlormethiazide) is a thiazide diuretic that inhibits the sodium-chloride symporter (NCC) in the distal convoluted tubule of the nephron, reducing sodium and chloride reabsorption and increasing excretion of water, sodium, chloride, and potassium.
One tablet (80 mg propranolol/25 mg hydrochlorothiazide) orally twice daily.
Oral, 50-100 mg once daily. Maximum 200 mg/day.
None Documented
None Documented
Propranolol: 3-6 hours (single dose), prolonged with chronic dosing (up to 12 hours). Hydrochlorothiazide: 6-15 hours; prolonged in renal impairment.
18-30 hours (clinically relevant for once-daily dosing in hypertension; prolonged in renal impairment)
Renal: 40% unchanged propranolol; 60% as metabolites. Biliary/fecal: minimal (less than 1%). Hydrochlorothiazide: renal 95% unchanged.
Renal: 30% (fecal: 70% as unabsorbed drug, primarily biliary elimination; <1% unchanged in urine)
Category C
Category C
Beta Blocker and Thiazide Diuretic
Thiazide Diuretic