Prescription savings
Stop paying too much for your prescriptions. Compare prices, get pharmacy coupons, and save up to 80%.Health conditions
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Medication discounts


| Dosage | Quantity | Retail price | GoodRx price |
|---|
| 100mg | 30 tablets | $119.76 | $33.16 |
| 200mg | 60 tablets | $344.59 | $36.81 |
| 300mg | 60 tablets | $246.04 | $34.53 |
| 400mg | 30 tablets | $53.85 | $22.80 |
| 450mg | 60 tablets | $281.37 | $43.14 |
| 600mg | 30 tablets | $90.07 | $22.08 |

Get Theophylline ER for as low as $22.80, which is 49% off the average retail price of $44.98 for the most common version, by using a GoodRx coupon.
You can save more on select medications with GoodRx Companion. See which medications are eligible.
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Pricing is calculated based on your prescription details.
250+ medications are free, with hundreds more under $10. Plans start at $9.99/mo. (when paid yearly). Terms apply.
GoodRx coupon prices last updated on 09/22/26.
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