Product Information
METFORMIN ER 1,000 MG GASTR-TB is a generic product labeled by Lupin Pharmaceuticals Inc., priced at $0.3357 per EA under NDC 68180033909. Its NADAC has been published 537 times since Jun 22, 2016.
FDA first approved this application on Jul 19, 2013. Its Orange Book therapeutic-equivalence code is AB3 — FDA rates it therapeutically equivalent to (substitutable for) its reference product.
Strength
1000 mg/1
Manufacturer
Lupin Pharmaceuticals Inc.NDC
68180033909
Classification
Generic
Dosage Form
TABLET, EXTENDED RELEASE
Route
ORAL
Effective Date
9/23/2026
Active Ingredients
METFORMIN HYDROCHLORIDEApproval Type
Generic (ANDA)
FDA Application
ANDA091664FDA Approved
7/19/2013
TE Code
AB3
On Market Since
2/1/2016
Pharmacological Classes
Price Statistics
The NADAC for METFORMIN ER 1,000 MG GASTR-TB has been published 537 times since Jun 22, 2016, and over the history we have for it it has declined 99.6%. The table below summarizes its recorded NADAC range and movement.
| Current price | $0.3357 per EA |
|---|---|
| All-time high | $97.4889 (Jan 11, 2017) |
| All-time low | $0.3336 (Aug 19, 2026) |
| 52-week high | $0.5124 |
| 52-week low | $0.3336 |
| Median price | $6.9067 |
| Average price | $18.2363 |
| Largest weekly change | +118.1% (Feb 23, 2022) |
| Weeks tracked | 537 |
| Tracking since | Jun 22, 2016 |
Generic Alternatives
The matcher finds 6 manufacturers 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 93% 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
Lupin Pharmaceuticals Inc. manufacturer profile
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Drug market
METFORMIN HYDROCHLORIDE market comparison
Compare this molecule across participating manufacturers and inspect the broader market price spread.
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 Lupin Pharmaceuticals Inc., is $0.3357 per EA (NDC 68180033909), 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 99.6%. It has been tracked across 537 weekly CMS publications since Jun 22, 2016.
What are the highest and lowest recorded NADAC prices for METFORMIN ER 1,000 MG GASTR-TB?
Since Jun 22, 2016, 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 $97.4889 (Jan 11, 2017), with a median of $6.9067 per EA.
Are there cheaper alternatives to METFORMIN ER 1,000 MG GASTR-TB?
Yes. 6 manufacturers publish a NADAC-priced product with the same active ingredient and strength in a comparable dosage form. The lowest-priced option, METFORMIN HCL 1,000 MG TABLET, is $0.0232 per EA — about 93% 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 68180033909) is labeled by Lupin Pharmaceuticals Inc., and CMS classifies it as a generic product.