Comparative Pharmacology
Head-to-head clinical analysis: SULFAMETHOPRIM versus THIOSULFIL.
Peer-Reviewed Evidence
Head-to-head clinical analysis: SULFAMETHOPRIM versus THIOSULFIL.
SULFAMETHOPRIM vs THIOSULFIL
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Sulfamethoprim is a combination of sulfamethoxazole and trimethoprim. Sulfamethoxazole inhibits bacterial dihydropteroate synthase, blocking folic acid synthesis; trimethoprim inhibits bacterial dihydrofolate reductase, also blocking folic acid synthesis. This sequential blockade produces bactericidal effects.
Thiosulfil (sulfamethizole) is a sulfonamide antibiotic that inhibits bacterial dihydropteroate synthase, blocking folic acid synthesis and thereby nucleic acid production.
Oral or intravenous: 800 mg sulfamethoxazole / 160 mg trimethoprim every 12 hours.
500 mg orally twice daily for 10-14 days.
None Documented
None Documented
Terminal elimination half-life: 8-12 hours in adults with normal renal function. Prolonged in renal impairment (up to 24-48 hours).
Terminal elimination half-life is 2-4 hours in patients with normal renal function (creatinine clearance >80 mL/min); prolonged to 20-50 hours in severe renal impairment (CrCl <30 mL/min).
Renal: 60-80% as unchanged drug via glomerular filtration and tubular secretion; biliary: 5-10%; fecal: <5%.
Renal: 70-90% as unchanged drug via glomerular filtration and tubular secretion. Biliary/fecal: <5%.
Category C
Category C
Sulfonamide Antibiotic
Sulfonamide Antibiotic