The bactericidal action of pefloxacin results from interference with the activity of the bacterial enzymes DNA gyrase and topoisomerase IV, which are needed for the transcription and replication of bacterial DNA. DNA gyrase appears to be the primary quinolone target for gram-negative bacteria. Topoisomerase IV appears to be the preferential target in gram-positive organisms. Interference with these two topoisomerases results in strand breakage of the bacterial chromosome, supercoiling, and resealing. As a result DNA replication and transcription is inhibited.
Peflox Tablet 400 mg
Oral: The usual dose is 400 mg twice daily (morning and evening) by mouth in most infections. Dosage should be adjusted for adults with hepatic insufficiency. Patients should take the drug with meals to avoid gastrointestinal disturbances.
IV Infusion: Adults- 400 mg in 100 ml of 5% dextrose slow infusion over 1 hr bid.