Comparative Pharmacology
Head-to-head clinical analysis: DOXYCYCLINE versus DYNACIN.
Peer-Reviewed Evidence
Head-to-head clinical analysis: DOXYCYCLINE versus DYNACIN.
DOXYCYCLINE vs DYNACIN
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Doxycycline inhibits bacterial protein synthesis by binding to the 30S ribosomal subunit, preventing the attachment of aminoacyl-tRNA to the mRNA-ribosome complex. It also exhibits anti-inflammatory and anti-collagenase activities.
Dynacin (minocycline) is a semi-synthetic tetracycline antibiotic that inhibits protein synthesis by binding to the 30S ribosomal subunit, preventing aminoacyl-tRNA from binding to mRNA-ribosome complex. It also has anti-inflammatory and neuroprotective effects via inhibition of microglial activation, matrix metalloproteinases, and p38 MAPK signaling.
100 mg orally or intravenously every 12 hours on day 1, then 100 mg every 12 hours or 50 mg every 6 hours.
100 mg orally twice daily or 200 mg orally once daily.
None Documented
None Documented
Clinical Note
moderateMethoxsalen + Doxycycline
"The metabolism of Doxycycline can be decreased when combined with Methoxsalen."
Clinical Note
moderateCyclophosphamide + Doxycycline
"The metabolism of Doxycycline can be decreased when combined with Cyclophosphamide."
Clinical Note
moderatePaclitaxel + Doxycycline
"The metabolism of Doxycycline can be decreased when combined with Paclitaxel."
Clinical Note
moderateDocetaxel + Doxycycline
Terminal elimination half-life is 18–24 hours in patients with normal renal function; prolonged to 20–30 hours in renal impairment; allows once or twice daily dosing.
Terminal elimination half-life 18-24 hours; prolonged in renal impairment (up to 50 hours in severe insufficiency). Steady state achieved in 4-5 days.
Renal (40%) and fecal/biliary (60%); undergoes enterohepatic circulation; active drug and metabolites excreted in urine and feces.
Renal (40-50% unchanged), hepatic metabolism (30-40% as metabolites), fecal (<10%).
Category D/X
Category C
Tetracycline Antibiotic
Tetracycline Antibiotic
"The metabolism of Doxycycline can be decreased when combined with Docetaxel."