Comparative Pharmacology
Head-to-head clinical analysis: CUBICIN RF versus RIFAXIMIN.
Peer-Reviewed Evidence
Head-to-head clinical analysis: CUBICIN RF versus RIFAXIMIN.
CUBICIN RF vs RIFAXIMIN
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Daptomycin is a cyclic lipopeptide antibiotic that binds to bacterial cell membranes, causing rapid depolarization and disruption of membrane potential, leading to cell death.
Rifaximin is a non-aminoglycoside, semi-synthetic antibiotic derived from rifamycin that inhibits bacterial RNA synthesis by binding to the beta-subunit of bacterial DNA-dependent RNA polymerase, thereby blocking transcription.
Adults: 6 mg/kg IV over 30-60 minutes every 24 hours. For deep-seated infections (e.g., endocarditis, osteomyelitis), consider 10 mg/kg IV every 24 hours.
550 mg orally three times daily for 14 days for travelers' diarrhea; 200 mg orally three times daily for 3 days for irritable bowel syndrome with diarrhea; 400 mg orally three times daily for 7 days for hepatic encephalopathy.
None Documented
None Documented
Clinical Note
moderateRifaximin + Digoxin
"The serum concentration of Digoxin can be increased when it is combined with Rifaximin."
Clinical Note
moderateRifaximin + Levofloxacin
"The serum concentration of Levofloxacin can be increased when it is combined with Rifaximin."
Clinical Note
moderateRifaximin + Estrone sulfate
"The serum concentration of Estrone sulfate can be decreased when it is combined with Rifaximin."
Clinical Note
moderateRifaximin + Tranilast
Terminal elimination half-life: approximately 8-9 hours in patients with normal renal function; prolonged in renal impairment.
The terminal elimination half-life is approximately 1.8 to 2.5 hours in patients with normal hepatic function. Due to negligible systemic absorption, the half-life has limited clinical relevance; drug action is largely confined to the gastrointestinal tract.
Renal excretion: approximately 80% of the dose as unchanged drug; biliary/fecal elimination: minor (<5%).
Rifaximin is primarily eliminated in feces as unchanged drug (>96% of an oral dose). Renal excretion is negligible (<0.4%). Biliary excretion is minimal due to poor systemic absorption.
Category C
Category A/B
Antibiotic
Antibiotic
"The serum concentration of Tranilast can be decreased when it is combined with Rifaximin."