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Get Theophylline ER for as low as $11.35, which is 80% off the average retail price of $56.49 for the most common version, by using a GoodRx coupon.
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GoodRx coupon prices last updated on 03/15/26.
Sales tax may apply and is not included.
| Dosage | Quantity | Retail price | GoodRx price |
|---|
| 100mg | 30 tablets | $116.25 | $34.41 |
| 200mg | 60 tablets | $339.58 | $36.81 |
| 300mg | 60 tablets | $192.99 | $34.26 |
| 400mg | 30 tablets | $54.58 | $11.35 |
| 450mg | 60 tablets | $280.51 | $43.32 |
| 600mg | 60 tablets | $133.59 | $39.25 |
