Product Information
DIVALPROEX SOD ER 500 MG TAB is a generic product labeled by Unichem Pharmaceuticals (USA) Inc., priced at $0.1943 per EA under NDC 29300038105. Its NADAC has been published 208 times since Oct 12, 2022.
FDA first approved this application on Feb 25, 2022. Its Orange Book therapeutic-equivalence code is AB — FDA rates it therapeutically equivalent to (substitutable for) its reference product.
Strength
500 mg/1
Manufacturer
Unichem Pharmaceuticals (USA) Inc.NDC
29300038105
Classification
Generic
Dosage Form
TABLET, FILM COATED, EXTENDED RELEASE
Route
ORAL
Effective Date
9/23/2026
Active Ingredients
DIVALPROEX SODIUMApproval Type
Generic (ANDA)
FDA Application
ANDA214643FDA Approved
2/25/2022
TE Code
AB
On Market Since
2/25/2022
Pharmacological Classes
Price Statistics
The NADAC for DIVALPROEX SOD ER 500 MG TAB has been published 208 times since Oct 12, 2022, and over the history we have for it it has declined 3.1%. The table below summarizes its recorded NADAC range and movement.
| Current price | $0.1943 per EA |
|---|---|
| All-time high | $0.2124 (Dec 13, 2023) |
| All-time low | $0.1508 (Nov 20, 2024) |
| 52-week high | $0.1943 |
| 52-week low | $0.1679 |
| Median price | $0.1873 |
| Average price | $0.1867 |
| Largest weekly change | -24.0% (Nov 20, 2024) |
| Weeks tracked | 208 |
| Tracking since | Oct 12, 2022 |
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 17% 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
Unichem Pharmaceuticals (USA) Inc. manufacturer profile
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Drug market
divalproex sodium market comparison
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Therapeutic class
Anti-epileptic Agent 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 DIVALPROEX SOD ER 500 MG TAB?
The current National Average Drug Acquisition Cost (NADAC) for DIVALPROEX SOD ER 500 MG TAB, manufactured by Unichem Pharmaceuticals (USA) Inc., is $0.1943 per EA (NDC 29300038105), effective Sep 30, 2026.
How has the price of DIVALPROEX SOD ER 500 MG TAB changed over time?
Over the history we have for it, the NADAC for DIVALPROEX SOD ER 500 MG TAB has declined 3.1%. It has been tracked across 208 weekly CMS publications since Oct 12, 2022.
What are the highest and lowest recorded NADAC prices for DIVALPROEX SOD ER 500 MG TAB?
Since Oct 12, 2022, the NADAC for DIVALPROEX SOD ER 500 MG TAB has ranged from a low of $0.1508 (Nov 20, 2024) to a high of $0.2124 (Dec 13, 2023), with a median of $0.1873 per EA.
Are there cheaper alternatives to DIVALPROEX SOD ER 500 MG TAB?
Yes. 6 manufacturers publish a NADAC-priced product with the same active ingredient and strength in a comparable dosage form. The lowest-priced option, DIVALPROEX SOD DR 500 MG TAB, is $0.1608 per EA — about 17% below DIVALPROEX SOD ER 500 MG TAB.
Who manufactures DIVALPROEX SOD ER 500 MG TAB?
DIVALPROEX SOD ER 500 MG TAB (NDC 29300038105) is labeled by Unichem Pharmaceuticals (USA) Inc., and CMS classifies it as a generic product.