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Get Theophylline ER for as low as $61.31, which is 74% off the average retail price of $237.26 for the most common version, by using a GoodRx coupon.
| Dosage | Quantity | Retail price | GoodRx price |
|---|
| 100mg | 60 tablets | $232.39 | $61.31 |
| 200mg | 60 tablets | $341.88 | $36.81 |
| 300mg | 60 tablets | $192.84 | $34.05 |
| 400mg | 90 tablets | $151.76 | $25.94 |
| 450mg | 60 tablets | $291.10 | $43.29 |
| 600mg | 30 tablets | $102.00 | $26.99 |
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GoodRx coupon prices last updated on 04/30/26.
*Prices subject to change without notice. Sales tax may apply and is not included.
