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ISONIAZID

ANDA

ISONIAZID | A080937 | ZETA PHARMACEUTICALS LLC

1 strength0 unique patents0 unique exclusivities

Drug Pricing (NADAC)

National Average Drug Acquisition Cost — Week of 2026-10-21 | 5 NDCs

Highest NADAC/Unit

$3.32

per ea

Lowest NADAC/Unit

$3.32

per ea

Brand NDCs

Generic NDCs

NDC Description	NADAC/Unit	Unit	Type	Generic NADAC	Effective
64950021703ISONIAZID 300 MG TABLET	$3.32	EA	Generic	—	2026-10-21
64950021710ISONIAZID 300 MG TABLET	$3.32	EA	Generic	—	2026-10-21
00555007101ISONIAZID 300 MG TABLET	$3.32	EA	Generic	—	2026-10-21
00555007102ISONIAZID 300 MG TABLET	$3.32	EA	Generic	—	2026-10-21
51079008320ISONIAZID 300 MG TABLET	$3.32	EA	Generic	—	2026-10-21

Source: NADAC (data.medicaid.gov). Prices reflect national average acquisition costs for retail community pharmacies.

VA Federal Supply Schedule

Government-negotiated contract prices | 2 NDCs (2 FSS)

Lowest Price

$8.52

Highest Price

$17.42

FSS NDCs

Big4 NDCs

Description	Price	Type	Vendor	Contract End
00555-0071-01ISONIAZID 300MG TAB	$8.52	FSS	Teva Pharmaceuticals USA, Inc.	04/30/2026
00555-0071-02ISONIAZID 300MG TAB	$17.42	FSS	Teva Pharmaceuticals USA, Inc.	04/30/2026

Source: VA Federal Supply Schedule (va.gov). Prices are government-negotiated contract prices.

API Supply Chain3 active DMFs2 inactive

3 active API suppliers hold Drug Master Files for this ingredient.

YUKI GOSEI KOGYO CO LTDISONIAZID BULK FORM

DMF 47721982

YANGZHOU PHARMACEUTICAL CO LTDISONIAZID

DMF 162352002

CALYX CHEMICALS AND PHARMACEUTICALS LTDISONIAZID

DMF 213222008

BAYER CORPInactiveISONIAZID (NEOTEBEN)

DMF 58901985

BEIJING SECOND PHARMACEUTICAL FACTORYInactiveISONIAZID USP23

DMF 146622000

Source: FDA Drug Master Files (fda.gov). Type II API DMFs matched by ingredient.

Products (1)

#002 — 300MG

0 patents0 exclusivities▴

TABLET;ORAL | Approved: Approved Prior to Jan 1, 1982

No patent or exclusivity listings for this strength.