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Get Effer-K for as low as $13.13, which is 65% off the average retail price of $37.61 for the most common version, by using a GoodRx coupon.


| Dosage | Quantity | Retail price | GoodRx price |
|---|
| 10meq | 30 effervescent tablets | N/A | $22.68 |
| 20meq | 30 effervescent tablets | $32.90 | $25.03 |
| 25meq | 30 effervescent tablets | $21.01 | $17.24 |
Get an extra $7.79 off Effer-K 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.