Product Information
METFORMIN ER 1,000 MG GASTR-TB is a generic product labeled by ScieGen Pharmaceuticals, Inc., priced at $0.3357 per EA under NDC 50228044690. Its NADAC has been published 266 times since Sep 1, 2021.
FDA first approved this application on Apr 16, 2021. Its Orange Book therapeutic-equivalence code is AB3 — FDA rates it therapeutically equivalent to (substitutable for) its reference product.
Strength
1000 mg/1
Manufacturer
ScieGen Pharmaceuticals, Inc.NDC
50228044690
Classification
Generic
Dosage Form
TABLET, FILM COATED, EXTENDED RELEASE
Route
ORAL
Effective Date
9/23/2026
Active Ingredients
METFORMIN HYDROCHLORIDEApproval Type
Generic (ANDA)
FDA Application
ANDA213334FDA Approved
4/16/2021
TE Code
AB3
On Market Since
4/16/2021
Pharmacological Classes
Price Statistics
The NADAC for METFORMIN ER 1,000 MG GASTR-TB has been published 266 times since Sep 1, 2021, and over the history we have for it it has declined 94.3%. The table below summarizes its recorded NADAC range and movement.
| Current price | $0.3357 per EA |
|---|---|
| All-time high | $7.1715 (Oct 13, 2021) |
| All-time low | $0.3336 (Aug 19, 2026) |
| 52-week high | $0.5124 |
| 52-week low | $0.3336 |
| Median price | $1.2455 |
| Average price | $1.8343 |
| Largest weekly change | +118.1% (Feb 23, 2022) |
| Weeks tracked | 266 |
| Tracking since | Sep 1, 2021 |
Generic Alternatives
The matcher finds 1 manufacturer offering a NADAC-published product with this drug's active ingredient and strength in a comparable dosage form (cheapest from each manufacturer, up to 10 shown below). Switching to the cheapest would cut per-unit acquisition cost by roughly 6% at current NADAC. These are candidates to verify clinically, not guaranteed substitutes — see our generic drug prices guide.
Related Drugs
Same classification
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Manufacturer
ScieGen Pharmaceuticals, Inc. manufacturer profile
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Drug market
Metformin Hydrochloride Extended-Release Tablets market comparison
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Therapeutic class
Biguanide class view
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Trend hub
Latest market trends
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Guide
Understanding NADAC pricing
Use the explainer when you need context on how CMS publishes NADAC and how to interpret the number on this page.
Frequently asked questions
What is the NADAC price of METFORMIN ER 1,000 MG GASTR-TB?
The current National Average Drug Acquisition Cost (NADAC) for METFORMIN ER 1,000 MG GASTR-TB, manufactured by ScieGen Pharmaceuticals, Inc., is $0.3357 per EA (NDC 50228044690), effective Sep 30, 2026.
How has the price of METFORMIN ER 1,000 MG GASTR-TB changed over time?
Over the history we have for it, the NADAC for METFORMIN ER 1,000 MG GASTR-TB has declined 94.3%. It has been tracked across 266 weekly CMS publications since Sep 1, 2021.
What are the highest and lowest recorded NADAC prices for METFORMIN ER 1,000 MG GASTR-TB?
Since Sep 1, 2021, the NADAC for METFORMIN ER 1,000 MG GASTR-TB has ranged from a low of $0.3336 (Aug 19, 2026) to a high of $7.1715 (Oct 13, 2021), with a median of $1.2455 per EA.
Are there cheaper alternatives to METFORMIN ER 1,000 MG GASTR-TB?
Yes. 1 manufacturer publishes a NADAC-priced product with the same active ingredient and strength in a comparable dosage form. The lowest-priced option, METFORMIN ER 1,000 MG OSM-TAB, is $0.3142 per EA — about 6% below METFORMIN ER 1,000 MG GASTR-TB.
Who manufactures METFORMIN ER 1,000 MG GASTR-TB?
METFORMIN ER 1,000 MG GASTR-TB (NDC 50228044690) is labeled by ScieGen Pharmaceuticals, Inc., and CMS classifies it as a generic product.