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Get Potassium Chloride ER for as low as $18.00, which is 77% off the average retail price of $79.66 for the most common version, by using a GoodRx coupon.


| Dosage | Quantity | Retail price | GoodRx price |
|---|
| 8meq | 90 capsules | $164.69 | $27.29 |
| 10meq | 90 capsules | N/A | $26.28 |
Get an extra $10.00 off Potassium Chloride ER and up to 90% off all prescriptions. Gold plans start at just $9.99/mo. Cancel any time.*
GoodRx coupon prices last updated on 05/02/26.
*Prices subject to change without notice. Sales tax may apply and is not included.