Comparative Pharmacology
Head-to-head clinical analysis: LAMOTRIGINE versus MYSOLINE.
Peer-Reviewed Evidence
Head-to-head clinical analysis: LAMOTRIGINE versus MYSOLINE.
Lamotrigine vs MYSOLINE
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.
Primidone is a barbiturate anticonvulsant that acts by enhancing GABA-A receptor activity and possibly by blocking sodium channels.
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.
250 mg orally 3 times daily; may increase by 250 mg/day every 3 days; usual maintenance 250 mg 3-4 times daily; maximum daily dose 1500 mg.
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)
Primidone: 5-15 hours (mean 10 hours); PEMA: 10-18 hours; Phenobarbital: 50-120 hours. Steady state achieved in 2-4 weeks due to accumulation of phenobarbital.
Renal (94% as metabolites, 10% unchanged; 2% fecal)
Primidone is excreted primarily in urine; approximately 60-80% as unchanged drug and metabolites (PEMA, phenobarbital), with less than 10% in feces.
Category A/B
Category C
Anticonvulsant
Anticonvulsant
"The serum concentration of Fluconazole can be increased when it is combined with Lamotrigine."