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Get Diltiazem ER (Tiazac) for as low as $44.74, which is 78% off the average retail price of $204.50 for the most common version, by using a GoodRx coupon.
Popular offers
Get an extra $9.00 off Diltiazem ER (Tiazac) and up to 90% off all prescriptions. Gold plans start at just $9.99/mo. Cancel any time.*
GoodRx coupon prices last updated on 05/01/26.
*Prices subject to change without notice. Sales tax may apply and is not included.
| Dosage | Quantity | Retail price | GoodRx price |
|---|
| 120mg | 90 capsules | $102.74 | $15.07 |
| 180mg | 90 capsules | $39.43 | $24.54 |
| 240mg | 90 capsules | $132.14 | $28.12 |
| 300mg | 90 capsules | $168.02 | $42.11 |
| 360mg | 90 capsules | $465.08 | $44.74 |
| 420mg | 30 capsules | $53.19 | $25.10 |
