Brand Reference: Lamictal
| Metric | Verified Benchmark | Source |
|---|---|---|
| Lamotrigine RxNorm Concept ID | 28439 | U.S. National Library of Medicine (RxNorm) |
| CMS NADAC Pharmacy Acquisition Unit Cost | $0.0480 / unit | CMS Medicaid NADAC Weekly Feed |
| Walk-In Chain Pharmacy Cash Average | $42.00 / mo | CMS NADAC + U.S. Retail Markup Index |
| Mark Cuban Cost Plus Wholesale Price | $5.50 / mo | Cost Plus Drugs Wholesale Feed |
| Community Mean Out-of-Pocket Paid | $7.00 / mo | 37 Zero-PHI Verified Patient Logs |
Stabilizes inactivated states of presynaptic voltage-sensitive Na+ channels to restrain excessive pathological cortical glutamate and aspartate exocytosis, preventing depressive relapses in bipolar spectrum mood instability without metabolic weight gain or cognitive dulling.
Classified under Presynaptic Voltage-Gated Sodium Channel & Glutamate Stabilizer (Rx), Lamotrigine exhibits a $36.50/month gap between standard U.S. retail cash counters ($42.00) and verified direct-to-patient routing ($5.50) anchored to $0.0480 CMS unit cost.
Pharmacokinetic profiling of Lamotrigine demonstrates an elimination half-life of 25–33 hours (doubled to ~59h by valproate; halved to ~14h by estrogen/carbamazepine) with 98% oral systemic bioavailability; clearance proceeds via hepatic ugt1a4 n-glucuronidation (non-cyp), reaching clinical onset within 6 weeks mandatory slow step-titration.
Titration schedules for Lamotrigine (25 mg PO daily weeks 1–2 → 50 mg PO daily weeks 3–4 → 100 mg PO daily week 5 → 200 mg PO daily maintenance) require excluding any emergent blistering rash or mucosal fever during titration; restarting full dose after >5 missed days without re-titrating; real-world patient logs highlight word-finding pause at >=300 mg (12% of reports), benign dry skin check (11% of reports), vivid dreaming (10% of reports) alongside a 92.90% Worth-It consensus.
Across 37 verified cash-pay logs, Lamotrigine achieves a 92.90% Worth-It rating with out-of-pocket spend averaging $7.00/mo versus $42.00/mo walk-in retail.
Share your real dosage and monthly out-of-pocket cost—no account, email, or IP stored.
Switched to Cost Plus Drugs at 25 mg PO daily weeks 1–2 for Lamotrigine; monthly out-of-pocket dropped to $4.84 compared with $42.00 retail.
Completed 10 weeks on Lamotrigine (50 mg PO daily weeks 3–4). Zero notable side effects on steady dosing.
Consistent biomarker response on 100 mg PO daily week 5 Lamotrigine sourced via TeleMed ($6.38/mo cash pay without insurance prior authorization).