Product Information
THEOPHYLLINE ER 450 MG TABLET is a generic product labeled by Heritage Pharmaceuticals Inc., priced at $0.9799 per EA under NDC 23155074201. Its NADAC has been published 67 times since Mar 19, 2025.
Strength
450 mg/1
Manufacturer
Heritage Pharmaceuticals Inc.NDC
23155074201
Classification
Generic
Dosage Form
TABLET, EXTENDED RELEASE
Route
ORAL
Last Updated
6/17/2026
Active Ingredients
THEOPHYLLINE ANHYDROUSApproval Type
Generic (ANDA)
FDA Application
ANDA081236On Market Since
5/12/2022
Pharmacological Classes
Price Statistics
The NADAC for THEOPHYLLINE ER 450 MG TABLET has been published 67 times since Mar 19, 2025, and over the history we have for it it has declined 48.8%. The table below summarizes its recorded NADAC range and movement.
| Current price | $0.9799 per EA |
|---|---|
| All-time high | $1.9133 (Apr 16, 2025) |
| All-time low | $0.5902 (Nov 19, 2025) |
| 52-week high | $1.4468 |
| 52-week low | $0.5902 |
| Median price | $1.1149 |
| Average price | $1.1848 |
| Largest weekly change | +45.0% (Dec 17, 2025) |
| Weeks tracked | 67 |
| Tracking since | Mar 19, 2025 |
Generic Alternatives
The matcher finds 7 NADAC-published products sharing this drug's active ingredient, strength, and dosage form across 7 manufacturers (up to 10 shown below). None of the shown alternatives sit below the current price. These are candidates to verify clinically, not guaranteed substitutes — see our generic drug prices guide.
Frequently asked questions
What is the NADAC price of THEOPHYLLINE ER 450 MG TABLET?
The current National Average Drug Acquisition Cost (NADAC) for THEOPHYLLINE ER 450 MG TABLET, manufactured by Heritage Pharmaceuticals Inc., is $0.9799 per EA (NDC 23155074201), effective Jun 24, 2026.
How has the price of THEOPHYLLINE ER 450 MG TABLET changed over time?
Over the history we have for it, the NADAC for THEOPHYLLINE ER 450 MG TABLET has declined 48.8%. It has been tracked across 67 weekly CMS publications since Mar 19, 2025.
What are the highest and lowest recorded NADAC prices for THEOPHYLLINE ER 450 MG TABLET?
Since Mar 19, 2025, the NADAC for THEOPHYLLINE ER 450 MG TABLET has ranged from a low of $0.5902 (Nov 19, 2025) to a high of $1.9133 (Apr 16, 2025), with a median of $1.1149 per EA.
Are there cheaper alternatives to THEOPHYLLINE ER 450 MG TABLET?
7 NADAC-published products share the same active ingredient, strength, and dosage form as THEOPHYLLINE ER 450 MG TABLET, but none are currently priced below it.
Who manufactures THEOPHYLLINE ER 450 MG TABLET?
THEOPHYLLINE ER 450 MG TABLET (NDC 23155074201) is labeled by Heritage Pharmaceuticals Inc., and CMS classifies it as a generic product.
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