Comparative Pharmacology
Head-to-head clinical analysis: DORYX MPC versus VIBRAMYCIN.
Peer-Reviewed Evidence
Head-to-head clinical analysis: DORYX MPC versus VIBRAMYCIN.
DORYX MPC vs VIBRAMYCIN
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Doxycycline, a tetracycline antibiotic, inhibits bacterial protein synthesis by binding to the 30S ribosomal subunit, blocking aminoacyl-tRNA binding to the mRNA-ribosome complex.
Inhibits bacterial protein synthesis by binding to the 30S ribosomal subunit, preventing addition of amino acids to the growing peptide chain. Bacteriostatic.
100 mg orally twice daily on day 1, then 100 mg once daily; alternatively, 200 mg orally once daily.
100 mg orally or intravenously every 12 hours on day 1, then 100 mg once daily; severe infections: 100 mg every 12 hours.
None Documented
None Documented
Terminal elimination half-life: 18–22 hours in adults with normal renal function; prolonged in renal impairment (up to 25–30 hours) or with hepatic dysfunction.
Terminal elimination half-life is 16-18 hours in patients with normal renal function. Prolonged to 20-36 hours in severe renal impairment; no significant change in hepatic impairment.
Renal (approximately 40% as unchanged drug via glomerular filtration), fecal/biliary (up to 30% as conjugated or inactive metabolites), remainder metabolized.
Approximately 40% excreted unchanged in urine via glomerular filtration; 20-25% eliminated in feces via biliary secretion; remainder metabolized. Renal clearance is about 30 mL/min.
Category C
Category C
Tetracycline Antibiotic
Tetracycline Antibiotic