Product Information
ISONIAZID 100 MG TABLET is a generic product labeled by Genus Lifesciences Inc., priced at $1.7322 per EA under NDC 64950021610. Its NADAC has been published 32 times since Nov 19, 2025.
Strength
100 mg/1
Manufacturer
Genus Lifesciences Inc.NDC
64950021610
Classification
Generic
Dosage Form
TABLET
Route
ORAL
Last Updated
6/17/2026
Active Ingredients
ISONIAZIDApproval Type
Generic (ANDA)
FDA Application
ANDA080936On Market Since
11/1/2024
Pharmacological Classes
Price Statistics
The NADAC for ISONIAZID 100 MG TABLET has been published 32 times since Nov 19, 2025, and over the history we have for it it has risen 8.2%. The table below summarizes its recorded NADAC range and movement.
| Current price | $1.7322 per EA |
|---|---|
| All-time high | $1.7322 (Jun 24, 2026) |
| All-time low | $1.6016 (Nov 19, 2025) |
| 52-week high | $1.7322 |
| 52-week low | $1.6016 |
| Median price | $1.6321 |
| Average price | $1.6480 |
| Largest weekly change | +1.7% (Apr 22, 2026) |
| Weeks tracked | 32 |
| Tracking since | Nov 19, 2025 |
Generic Alternatives
The matcher finds 1 NADAC-published product sharing this drug's active ingredient, strength, and dosage form across 1 manufacturer (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 100 MG TABLET?
The current National Average Drug Acquisition Cost (NADAC) for ISONIAZID 100 MG TABLET, manufactured by Genus Lifesciences Inc., is $1.7322 per EA (NDC 64950021610), effective Jun 24, 2026.
How has the price of ISONIAZID 100 MG TABLET changed over time?
Over the history we have for it, the NADAC for ISONIAZID 100 MG TABLET has risen 8.2%. It has been tracked across 32 weekly CMS publications since Nov 19, 2025.
What are the highest and lowest recorded NADAC prices for ISONIAZID 100 MG TABLET?
Since Nov 19, 2025, the NADAC for ISONIAZID 100 MG TABLET has ranged from a low of $1.6016 (Nov 19, 2025) to a high of $1.7322 (Jun 24, 2026), with a median of $1.6321 per EA.
Are there cheaper alternatives to ISONIAZID 100 MG TABLET?
1 NADAC-published product shares the same active ingredient, strength, and dosage form as ISONIAZID 100 MG TABLET, but none are currently priced below it.
Who manufactures ISONIAZID 100 MG TABLET?
ISONIAZID 100 MG TABLET (NDC 64950021610) is labeled by Genus Lifesciences Inc., and CMS classifies it as a generic product.
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