Comparative Pharmacology
Head-to-head clinical analysis: PREGABALIN versus TEGRETOL.
Peer-Reviewed Evidence
Head-to-head clinical analysis: PREGABALIN versus TEGRETOL.
PREGABALIN vs TEGRETOL
Comparing the clinical profiles, pharmacokinetic behaviors, and safety indices of these two therapeutic agents.
Binds to the alpha2-delta subunit of voltage-gated calcium channels, reducing calcium influx and decreasing release of excitatory neurotransmitters (e.g., glutamate, norepinephrine, substance P).
Voltage-gated sodium channel blocker; stabilizes neuronal membranes and inhibits repetitive firing. Also inhibits glutamate release and enhances GABA activity.
Initial: 75 mg orally twice daily; may increase to 150 mg twice daily within 1 week; maximum: 600 mg/day in divided doses.
Initial: 200 mg orally twice daily; increase by 200 mg/day at weekly intervals. Maintenance: 800-1200 mg/day in 2-4 divided doses. Maximum dose: 1600 mg/day. Extended-release: 200-400 mg twice daily.
None Documented
None Documented
Clinical Note
moderatePregabalin + Fluticasone propionate
"The therapeutic efficacy of Fluticasone propionate can be increased when used in combination with Pregabalin."
Clinical Note
moderatePregabalin + Haloperidol
"The therapeutic efficacy of Haloperidol can be increased when used in combination with Pregabalin."
Clinical Note
moderatePregabalin + Erythromycin
"The metabolism of Erythromycin can be decreased when combined with Pregabalin."
Clinical Note
moderatePregabalin + Fluconazole
Terminal elimination half-life is approximately 6.3 hours. In patients with renal impairment, half-life is prolonged (up to 48 hours in anuria). Requires dose adjustment based on creatinine clearance.
Single dose: 25–65 hours (mean ~35 h); chronic therapy: 12–17 hours due to autoinduction; clinical context: requires 3–4 weeks to reach steady-state after dose adjustment.
Primarily renal excretion as unchanged drug (92-99% of dose). Approximately 0.1% is metabolized. No biliary or fecal elimination of significance.
Primarily hepatic metabolism; ~72% excreted in urine (as metabolites, <2% unchanged), ~28% excreted in feces via bile.
Category A/B
Category C
Anticonvulsant
Anticonvulsant
"The serum concentration of Fluconazole can be increased when it is combined with Pregabalin."