Product Information
METFORMIN ER 500 MG GASTRC-TB is a generic product labeled by Lupin Pharmaceuticals Inc., priced at $0.2710 per EA under NDC 68180033801. 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
500 mg/1
Manufacturer
Lupin Pharmaceuticals Inc.NDC
68180033801
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 500 MG GASTRC-TB has been published 537 times since Jun 22, 2016, and over the history we have for it it has declined 99.4%. The table below summarizes its recorded NADAC range and movement.
| Current price | $0.2710 per EA |
|---|---|
| All-time high | $45.7903 (May 10, 2017) |
| All-time low | $0.2619 (Aug 19, 2026) |
| 52-week high | $0.3965 |
| 52-week low | $0.2619 |
| Median price | $2.7019 |
| Average price | $8.9423 |
| Largest weekly change | +107.3% (Feb 23, 2022) |
| Weeks tracked | 537 |
| Tracking since | Jun 22, 2016 |
Generic Alternatives
The matcher finds 9 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 95% 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
See the full portfolio, pricing trend, and other products from this labeler.
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 500 MG GASTRC-TB?
The current National Average Drug Acquisition Cost (NADAC) for METFORMIN ER 500 MG GASTRC-TB, manufactured by Lupin Pharmaceuticals Inc., is $0.2710 per EA (NDC 68180033801), effective Sep 30, 2026.
How has the price of METFORMIN ER 500 MG GASTRC-TB changed over time?
Over the history we have for it, the NADAC for METFORMIN ER 500 MG GASTRC-TB has declined 99.4%. 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 500 MG GASTRC-TB?
Since Jun 22, 2016, the NADAC for METFORMIN ER 500 MG GASTRC-TB has ranged from a low of $0.2619 (Aug 19, 2026) to a high of $45.7903 (May 10, 2017), with a median of $2.7019 per EA.
Are there cheaper alternatives to METFORMIN ER 500 MG GASTRC-TB?
Yes. 9 manufacturers publish a NADAC-priced product with the same active ingredient and strength in a comparable dosage form. The lowest-priced option, METFORMIN HCL 500 MG TABLET, is $0.0140 per EA — about 95% below METFORMIN ER 500 MG GASTRC-TB.
Who manufactures METFORMIN ER 500 MG GASTRC-TB?
METFORMIN ER 500 MG GASTRC-TB (NDC 68180033801) is labeled by Lupin Pharmaceuticals Inc., and CMS classifies it as a generic product.