Prescription savings
Stop paying too much for your prescriptions. Compare prices, get pharmacy coupons, and save up to 80%.Resources
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Medication discounts

Get Effer-K for as low as $21.57, which is 40% off the average retail price of $35.88 for the most common version, by using a GoodRx coupon.


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 08/19/26.
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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 | $34.67 | $21.57 |
| 25meq | 30 effervescent tablets | $74.88 | $18.15 |