Find expert answers to your health questions so you can make the best decisions for yourself and your family.Prescription savings
Stop paying too much for your prescriptions. Compare prices, get pharmacy coupons, and save up to 80%.Resources
About GoodRx
Find expert answers to your health questions so you can make the best decisions for yourself and your family.Health conditions
Medications & treatment
Access & affordability
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Medication discounts
Get Effer-K for as low as $17.06, which is 65% off the average retail price of $48.41 for the most common version, by using a GoodRx coupon.
Popular offers
250+ medications are free, with hundreds more under $10. Plans start at $9.99/mo. (when paid yearly). Terms apply.
GoodRx coupon prices last updated on 08/23/26.
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Pricing is calculated based on your prescription details.
| Dosage | Quantity | Retail price | GoodRx price |
|---|
| 10meq | 30 effervescent tablets | N/A | $20.91 |
| 20meq | 30 effervescent tablets | $34.89 | $21.57 |
| 25meq | 30 effervescent tablets | $75.45 | $18.15 |
