Comparative Pharmacology
Head-to-head clinical analysis: TERFONYL versus THIOSULFIL.
Peer-Reviewed Evidence
Head-to-head clinical analysis: TERFONYL versus THIOSULFIL.
TERFONYL vs THIOSULFIL
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
TERFONYL is a sulfonamide antibiotic that inhibits bacterial dihydropteroate synthase, thereby blocking folate synthesis and bacterial DNA replication.
Thiosulfil (sulfamethizole) is a sulfonamide antibiotic that inhibits bacterial dihydropteroate synthase, blocking folic acid synthesis and thereby nucleic acid production.
2 g intravenously every 12 hours over 24 hours for susceptible infections.
500 mg orally twice daily for 10-14 days.
None Documented
None Documented
Terminal elimination half-life is 2.5-4 hours in adults with normal renal function; prolonged to 12-24 hours in severe renal impairment (CrCl < 30 mL/min).
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 excretion accounts for 70-90% of elimination as unchanged drug via glomerular filtration and tubular secretion; biliary/fecal excretion constitutes 10-30%.
Renal: 70-90% as unchanged drug via glomerular filtration and tubular secretion. Biliary/fecal: <5%.
Category C
Category C
Sulfonamide Antibiotic
Sulfonamide Antibiotic