Product Information
THEOPHYLLINE ER 400 MG TABLET is a generic product labeled by Westminster Pharmaceuticals LLC, priced at $0.9576 per EA under NDC 69367041401. Its NADAC has been published 24 times since Jan 14, 2026.
Strength
400 mg/1
Manufacturer
Westminster Pharmaceuticals LLCNDC
69367041401
Classification
Generic
Dosage Form
TABLET, EXTENDED RELEASE
Route
ORAL
Last Updated
6/17/2026
Active Ingredients
THEOPHYLLINE ANHYDROUSApproval Type
Generic (ANDA)
FDA Application
ANDA040560On Market Since
11/25/2025
Pharmacological Classes
Price Statistics
The NADAC for THEOPHYLLINE ER 400 MG TABLET has been published 24 times since Jan 14, 2026, and over the history we have for it it has risen 4.6%. The table below summarizes its recorded NADAC range and movement.
| Current price | $0.9576 per EA |
|---|---|
| All-time high | $1.0376 (Apr 15, 2026) |
| All-time low | $0.9123 (Apr 22, 2026) |
| 52-week high | $1.0376 |
| 52-week low | $0.9123 |
| Median price | $0.9546 |
| Average price | $0.9650 |
| Largest weekly change | -12.1% (Apr 22, 2026) |
| Weeks tracked | 24 |
| Tracking since | Jan 14, 2026 |
Generic Alternatives
No other NADAC-published product shares this drug's active ingredient, strength, and dosage form. Compare the broader picture on the Theophylline Anhydrous market page.
Lowest-Cost Alternatives
No alternatives available
Frequently asked questions
What is the NADAC price of THEOPHYLLINE ER 400 MG TABLET?
The current National Average Drug Acquisition Cost (NADAC) for THEOPHYLLINE ER 400 MG TABLET, manufactured by Westminster Pharmaceuticals LLC, is $0.9576 per EA (NDC 69367041401), effective Jun 24, 2026.
How has the price of THEOPHYLLINE ER 400 MG TABLET changed over time?
Over the history we have for it, the NADAC for THEOPHYLLINE ER 400 MG TABLET has risen 4.6%. It has been tracked across 24 weekly CMS publications since Jan 14, 2026.
What are the highest and lowest recorded NADAC prices for THEOPHYLLINE ER 400 MG TABLET?
Since Jan 14, 2026, the NADAC for THEOPHYLLINE ER 400 MG TABLET has ranged from a low of $0.9123 (Apr 22, 2026) to a high of $1.0376 (Apr 15, 2026), with a median of $0.9546 per EA.
Are there cheaper alternatives to THEOPHYLLINE ER 400 MG TABLET?
No other NADAC-published product currently shares the active ingredient, strength, and dosage form of THEOPHYLLINE ER 400 MG TABLET, so no direct lower-cost alternative is listed.
Who manufactures THEOPHYLLINE ER 400 MG TABLET?
THEOPHYLLINE ER 400 MG TABLET (NDC 69367041401) is labeled by Westminster Pharmaceuticals LLC, and CMS classifies it as a generic product.
Related Drugs
Same classification