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methsuximide 300 mg/1 Medicare Part D Coverage

Brand name: Celontin
Dosage form
CAPSULE
Route
ORAL
3%
of Medicare Part D plans
cover methsuximide
175 of 5,530 plans
3.1
Avg. formulary tier
$0.00
Median 30-day copay
$0.00–$0.00
Copay range

Formulary Tier Distribution

How Medicare Part D plans classify methsuximide. Lower tiers = lower copays.

Tier 1 - Preferred Generic 8%
14 plans • avg $0.00/mo
Tier 3 - Preferred Brand 66%
115 plans • avg $17.61/mo
Tier 4 - Non-Preferred Drug 26%
46 plans • avg $4.44/mo

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methsuximide Medicare Coverage by State

Coverage rates and average costs vary significantly by state. Click a state to see the specific plans available there.

Frequently Asked Questions about methsuximide

3% of Medicare Part D plans cover methsuximide. It is most commonly placed on Tier 3. Coverage varies by plan and geographic area.

The median 30-day copay for methsuximide on Medicare Part D is $0.00 at a preferred pharmacy. Costs range from $0.00 to $0.00 depending on the plan.

methsuximide is placed on Tier 3 by most Medicare Part D plans. Lower tier numbers generally mean lower copays.

0% of plans require prior authorization for methsuximide. Prior authorization means your doctor must confirm the drug is medically necessary before the plan will cover it.

Coverage statistics based on CMS formulary data for plan year 2026. Data updated regularly. Methodology →