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Get Effer-K for as low as $18.60, which is 47% off the average retail price of $34.83 for the most common version, by using a GoodRx coupon.
Popular offers
| Dosage | Quantity | Retail price | GoodRx price |
|---|---|---|---|
| 10meq | 30 effervescent tablets | N/A | $22.68 |
| 20meq | 30 effervescent tablets | $32.81 | $25.03 |
| 25meq | 30 effervescent tablets | $20.25 | $17.24 |
Get an extra $11.14 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 04/17/26.
*Prices subject to change without notice. Sales tax may apply and is not included.
