Comparative Pharmacology
Head-to-head clinical analysis: LAMOTRIGINE versus PHENYTEX.
Peer-Reviewed Evidence
Head-to-head clinical analysis: LAMOTRIGINE versus PHENYTEX.
Lamotrigine vs PHENYTEX
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Stabilizes neuronal membranes by blocking voltage-gated sodium channels and inhibiting the release of excitatory neurotransmitters, particularly glutamate and aspartate.
Stabilizes neuronal membranes by promoting sodium efflux and inhibiting calcium influx, thereby reducing repetitive firing of action potentials. Also enhances GABA-mediated inhibition.
Initial: 25 mg orally once daily for 2 weeks, then 50 mg once daily for 2 weeks, then increase by 50 mg every 1-2 weeks. Maintenance: 100-200 mg twice daily (200-400 mg/day). Maximum: 400 mg/day.
300-400 mg/day orally in divided doses, typically 100 mg three times daily or 200 mg twice daily; loading dose 1 g orally divided into three doses (400 mg, 300 mg, 300 mg) at 2-hour intervals, or 10-15 mg/kg IV at a rate not exceeding 50 mg/min.
None Documented
None Documented
Clinical Note
moderateLamotrigine + Fluticasone propionate
"The risk or severity of adverse effects can be increased when Lamotrigine is combined with Fluticasone propionate."
Clinical Note
moderateLamotrigine + Desmopressin
"The risk or severity of adverse effects can be increased when Lamotrigine is combined with Desmopressin."
Clinical Note
moderateLamotrigine + Erythromycin
"The metabolism of Erythromycin can be decreased when combined with Lamotrigine."
Clinical Note
moderateLamotrigine + Fluconazole
25.4 h (range 24-31 h, prolonged to 59 h with valproate)
22 hours (range 7-42 hours; prolonged in hepatic impairment; clinical context: steady-state achieved in 5-7 days)
Renal (94% as metabolites, 10% unchanged; 2% fecal)
Renal (hepatic metabolism to inactive metabolites; <5% excreted unchanged in urine; biliary/fecal excretion minimal)
Category A/B
Category C
Anticonvulsant
Anticonvulsant
"The serum concentration of Fluconazole can be increased when it is combined with Lamotrigine."