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Get Diltiazem ER (Tiazac) for as low as $20.07, which is 73% off the average retail price of $75.62 for the most common version, by using a GoodRx coupon.
200+ medications are free, with hundreds more under $10. Just $14.99/mo. Terms apply.
GoodRx coupon prices last updated on 05/24/26.
*Prices subject to change without notice. Sales tax may apply and is not included.| Dosage | Quantity | Retail price | GoodRx price |
|---|
| 120mg | 90 capsules | $102.53 | $20.07 |
| 180mg | 90 capsules | $38.63 | $24.54 |
| 240mg | 90 capsules | $132.55 | $33.12 |
| 300mg | 90 capsules | $168.01 | $42.11 |
| 360mg | 90 capsules | $465.07 | $44.74 |
| 420mg | 90 capsules | $150.20 | $49.10 |