Comparative Pharmacology
Head-to-head clinical analysis: NIX versus PENETREX.
Peer-Reviewed Evidence
Head-to-head clinical analysis: NIX versus PENETREX.
NIX vs PENETREX
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
NIX (permethrin) is a synthetic pyrethroid that acts on the nervous system of parasites by prolonging the inactivation of sodium channels, leading to paralysis and death of lice and mites.
Penetrex (pemetrexed) inhibits thymidylate synthase (TS), dihydrofolate reductase (DHFR), and glycinamide ribonucleotide formyltransferase (GARFT), disrupting folate-dependent purine and pyrimidine synthesis, leading to inhibition of DNA replication and cell death.
1% permethrin cream rinse (NIX) applied to wet hair and scalp for 10 minutes, then rinsed. Repeat after 7 days if live lice are seen.
1 g intravenously every 12 hours.
None Documented
None Documented
Clinical Note
moderateClonixin + Gatifloxacin
"Clonixin may increase the neuroexcitatory activities of Gatifloxacin."
Clinical Note
moderateClonixin + Rosoxacin
"Clonixin may increase the neuroexcitatory activities of Rosoxacin."
Clinical Note
moderateClonixin + Levofloxacin
"Clonixin may increase the neuroexcitatory activities of Levofloxacin."
Clinical Note
moderateClonixin + Trovafloxacin
"Clonixin may increase the neuroexcitatory activities of Trovafloxacin."
12-17 hours (terminal); clinical context: steady-state reached within 2-3 days for topical application, wash-out period for repeated use
Terminal elimination half-life is 8 hours (range 6–10 hours); clinically, steady-state is achieved after 2–3 days of twice-daily dosing.
Renal: <0.5% unchanged; fecal: >50% as metabolites (permethrin isomers)
Renal excretion of unchanged drug accounts for approximately 65% of elimination; biliary/fecal elimination accounts for 25% as metabolites; the remaining 10% is via other routes.
Category C
Category C
Topical Antiparasitic
Topical Antiparasitic