Product Information
ISONIAZID 300 MG TABLET is a generic product labeled by Omnivium Pharmaceuticals LLC, priced at $3.4133 per EA under NDC 81665010810. Its NADAC has been published 58 times since May 21, 2025.
Strength
300 mg/1
Manufacturer
Omnivium Pharmaceuticals LLCNDC
81665010810
Classification
Generic
Dosage Form
TABLET
Route
ORAL
Last Updated
6/17/2026
Active Ingredients
ISONIAZIDApproval Type
Generic (ANDA)
FDA Application
ANDA040090On Market Since
10/15/2024
Pharmacological Classes
Price Statistics
The NADAC for ISONIAZID 300 MG TABLET has been published 58 times since May 21, 2025, and over the history we have for it it has risen 9.1%. The table below summarizes its recorded NADAC range and movement.
| Current price | $3.4133 per EA |
|---|---|
| All-time high | $3.4133 (Jun 24, 2026) |
| All-time low | $2.6149 (Nov 19, 2025) |
| 52-week high | $3.4133 |
| 52-week low | $2.6149 |
| Median price | $3.1403 |
| Average price | $3.0877 |
| Largest weekly change | +18.7% (Dec 31, 2025) |
| Weeks tracked | 58 |
| Tracking since | May 21, 2025 |
Generic Alternatives
The matcher finds 2 NADAC-published products sharing this drug's active ingredient, strength, and dosage form across 2 manufacturers (up to 10 shown below). None of the shown alternatives sit below the current price. These are candidates to verify clinically, not guaranteed substitutes — see our generic drug prices guide.
Frequently asked questions
What is the NADAC price of ISONIAZID 300 MG TABLET?
The current National Average Drug Acquisition Cost (NADAC) for ISONIAZID 300 MG TABLET, manufactured by Omnivium Pharmaceuticals LLC, is $3.4133 per EA (NDC 81665010810), effective Jun 24, 2026.
How has the price of ISONIAZID 300 MG TABLET changed over time?
Over the history we have for it, the NADAC for ISONIAZID 300 MG TABLET has risen 9.1%. It has been tracked across 58 weekly CMS publications since May 21, 2025.
What are the highest and lowest recorded NADAC prices for ISONIAZID 300 MG TABLET?
Since May 21, 2025, the NADAC for ISONIAZID 300 MG TABLET has ranged from a low of $2.6149 (Nov 19, 2025) to a high of $3.4133 (Jun 24, 2026), with a median of $3.1403 per EA.
Are there cheaper alternatives to ISONIAZID 300 MG TABLET?
2 NADAC-published products share the same active ingredient, strength, and dosage form as ISONIAZID 300 MG TABLET, but none are currently priced below it.
Who manufactures ISONIAZID 300 MG TABLET?
ISONIAZID 300 MG TABLET (NDC 81665010810) is labeled by Omnivium Pharmaceuticals LLC, and CMS classifies it as a generic product.
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