Last updated: March 2026
How Much Does Lamotrigine Cost?
Cost Breakdown by Type
| Type / Procedure | Without Insurance | With Insurance |
|---|---|---|
| Lamotrigine 100mg (generic) | $4 – $15 | $0 – $6 |
| Lamotrigine 200mg (generic) | $4 – $20 | $0 – $8 |
| Lamotrigine 25mg Starter Pack (generic) | $8 – $25 | $2 – $10 |
What Affects the Cost
- Brand-name vs. generic availability
- Insurance formulary tier placement
- Pharmacy choice (retail vs. mail-order vs. Costco)
- Manufacturer savings cards and coupons
- Dosage and quantity prescribed
- Geographic location
Insurance Coverage
Typical coverage: Tier 1 generic — mood stabilizer and anticonvulsant; first-line for bipolar maintenance
Most insurance plans use a tiered formulary: Tier 1 (generic) $0-$15 copay, Tier 2 (preferred brand) $25-$75, Tier 3 (non-preferred brand) $50-$150, Tier 4 (specialty) $100-$500+. Prior authorization may be required for certain medications. Step therapy may require trying cheaper alternatives first.
How to Save Money
- Always ask for generic when available — saves 50-90%
- Use GoodRx, RxSaver, or similar discount cards
- Costco pharmacy is open to non-members and often has lowest prices
- Mark Cuban's Cost Plus Drugs offers transparent low pricing
- Manufacturer patient assistance programs provide free medication to qualifying patients
- HSA/FSA funds can cover medication costs tax-free
Related Procedures & Costs
Frequently Asked Questions
Generic lamotrigine costs $4 to $25 per month without insurance. Maintenance doses are very affordable, with many pharmacies offering it on $4 generic lists.
Lamotrigine is FDA-approved for bipolar disorder maintenance (preventing mood episodes) and as an anticonvulsant for epilepsy. It is considered first-line for bipolar depression prevention.
Lamotrigine can rarely cause Stevens-Johnson syndrome, a serious skin rash. This is why dosing must be started very slowly (titrated over 6+ weeks). Report any new rash immediately to your doctor.