Last updated: March 2026
How Much Does Clobazam (Onfi) Cost?
Cost Breakdown by Type
| Type / Procedure | Without Insurance | With Insurance |
|---|---|---|
| 10mg Tablets Generic (30-day) | $30 – $100 | $5 – $25 |
| 20mg Tablets Generic (30-day) | $40 – $150 | $10 – $35 |
| Brand Onfi 10mg (30-day) | $200 – $400 | $30 – $60 |
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: Generic Tier 2; brand Onfi Tier 3-4; used for Lennox-Gastaut syndrome
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
Clobazam treats seizures associated with Lennox-Gastaut syndrome in patients 2 years and older. It is a benzodiazepine with anticonvulsant properties.
Yes, clobazam is a Schedule IV controlled substance due to its benzodiazepine classification, though it has less abuse potential than other benzodiazepines.
Generic clobazam costs $30 to $150 per month. Brand Onfi costs $200 to $400 per month.