isoniazid 300 MG Oral Tablet
isoniazid
RxCUI: 197832
What the CMS Formulary Data Shows for isoniazid 300 MG Oral Tablet
Per the CMS 2026 Part D formulary file, isoniazid 300 MG Oral Tablet (RxNorm concept RXCUI 197832, generic name isoniazid) appears on 330 distinct formulary files spanning 5,067 Medicare Part D plan offerings - 100% of enrollable Part D products, near-universal placement. Tier placement ranges from Tier 1 to Tier 3, with a cross-plan average of Tier 1.3.
Real-world access to isoniazid 300 MG Oral Tablet depends on utilization management as much as tier placement: 0% of covering formularies require prior authorization. 0% require step therapy. 0% apply quantity limits.
Historical spending context from the CMS Medicare Part D Drug Spending Dashboard shows 11,875 Part D beneficiaries filled isoniazid 300 MG Oral Tablet in 2023, with total plan-and-beneficiary spending of $365,258 and an average per-beneficiary annual cost of $30.76. The plan-by-plan detail below lists exactly which PDP and MA-PD contracts carry isoniazid 300 MG Oral Tablet today.
Coverage Details
- Formularies covering
- 330
- Plans covering
- 5,067
- Coverage rate
- 100%
- Tier range
- Tier 1 – Tier 3
- Average tier
- Tier 1, Preferred Generic
Restrictions
- Prior authorization required
- 0% of formularies
- Step therapy required
- 0% of formularies
- Quantity limits
- 0% of formularies
2023 Medicare Spending
- Beneficiaries
- 11,875
- Total spending
- $365,258
- Avg per beneficiary
- $30.76
Tier Distribution Across Plans
Standalone Drug Plans (PDP) Covering isoniazid 300 MG Oral Tablet
2 standalone prescription drug plans include this drug.
| Plan | Insurer | Tier | PA | ST | Premium | States |
|---|---|---|---|---|---|---|
| AARP Medicare Rx Preferred from UHC (PDP) | UNITEDHEALTHCARE INS. CO. & UHC INS. CO. OF NY | T1 | No | No | $0 | - |
| AARP Medicare Rx Preferred from UHC (PDP) | UNITEDHEALTHCARE INS. CO. & UHC INS. CO. OF NY | T1 | No | No | $0 | - |
Medicare Advantage Plans (MA-PD) Covering isoniazid 300 MG Oral Tablet
98 Medicare Advantage plans with Part D drug coverage include this drug.
Frequently Asked Questions
Is isoniazid 300 MG Oral Tablet covered by Medicare Part D?
Yes, isoniazid 300 MG Oral Tablet is covered by 5,067 Medicare Part D plans (100% of all Part D formularies).
What tier is isoniazid 300 MG Oral Tablet on Medicare Part D plans?
isoniazid 300 MG Oral Tablet averages Tier 1.3 across Part D plans, ranging from Tier 1 to Tier 3.
Does isoniazid 300 MG Oral Tablet require prior authorization?
0% of Part D formularies require prior authorization for isoniazid 300 MG Oral Tablet. Step therapy: 0%. Quantity limits: 0%.
How much does Medicare spend on isoniazid 300 MG Oral Tablet?
In 2023, total Medicare Part D spending on isoniazid 300 MG Oral Tablet was $365,258, covering 11,875 beneficiaries. The average spend per beneficiary was $30.76.
Read our methodology - how this data is sourced, computed, and verified.