Comparative Pharmacology
Head-to-head clinical analysis: MYCIFRADIN versus RIFAXIMIN.
Peer-Reviewed Evidence
Head-to-head clinical analysis: MYCIFRADIN versus RIFAXIMIN.
MYCIFRADIN vs RIFAXIMIN
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Aminoglycoside antibiotic that binds to the 30S ribosomal subunit, inhibiting bacterial protein synthesis by causing misreading of mRNA and incorporation of incorrect amino acids into the growing peptide chain.
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.
1-2 g orally every 6 hours for 7-14 days. Or 500 mg intramuscularly every 12 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 is 9–12 hours in patients with normal renal function; may extend to >20 hours in impaired renal function, necessitating dose adjustment.
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.
Primarily renal excretion of unchanged drug via glomerular filtration; >90% of absorbed dose excreted unchanged in urine within 24 hours. Minor biliary excretion (<1%) with fecal elimination accounting for <1%.
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."