EFFER-K 25 MEQ TABLET EFF

What it is

EFFER-K 25 MEQ TABLET EFF is how the CMS NADAC file names this product. The FDA NDC Directory lists it as potassium bicarbonate, under the trade names “Effer-K Cherry Berry”, “Effer-K Lemon Citrus”, “Effer-K Orange” and “Effer-K Unflavored”.

FDA gives its dosage form as tablet, effervescent and its route as oral.

The labeler, the company named on the label, is Nomax Inc.

FDA lists no Established Pharmacologic Class for it.

The NADAC file of 2026-10-14 prices it under 9 NDCs (National Drug Codes); the FDA directory lists 5 of them.

NADAC classes it under the rate-setting classes B and G, depending on the NDC, and does not mark it as sold over the counter.

What pharmacies pay

Pharmacies pay $10.70 – $25.78 for 30 tablets, depending on the NDC ($0.35667 to $0.85942 per EA), by the CMS NADAC file of 2026-10-14; those prices took effect between 2025-11-19 and 2026-09-23. That is what pharmacies pay their suppliers, not what they charge you.

NADAC’s explanation codes for it: 1, calculated from the most recently completed pharmacy survey; 4, carried forward from the previous file; 6, the CMS Covered Outpatient Drug Product File S/I/N drug category was not applied when grouping drugs for the calculation.

The NADAC of 3 of these 9 NDCs was carried forward from an earlier file (NADAC explanation code 2 or 4), not newly surveyed: those prices took effect on 2025-11-19. The file is new; the price is not.

What NADAC measures · Why 30 tablets · NADAC explanation codes · Carried-forward prices

The 1 labelers

When these prices took effect

• 2026-09-23 · 6 NDCs · $0.35667 per EA filed
• 2025-11-19 · 3 NDCs, all carried forward from an earlier file · $0.85942 per EA filed

Other strengths, forms and brands

3 other products in the NADAC file share the FDA nonproprietary name potassium bicarbonate with EFFER-K 25 MEQ TABLET EFF.

Part D is one average per brand and generic name, over every strength and form.

CMS NADAC · nadac-national-average-drug-acquisition-cost-20261014.csv · eff. 2025-11-19, 2026-09-23 · as of 2026-10-14 · retrieved 2026-10-17

Medicare Part D · DSD_PTD_RY26_P04_V10_DY24_BGM.csv · eff. 2024-01-01 to 2024-12-31 · as of 2026-06-25 · retrieved 2026-10-18

What Medicare paid

Medicare Part D paid $14.74 for 30 tablets, at an average of $0.49139 per EA in 2024 (2024-01-01 to 2024-12-31) for “Effer-K” and “Potassium Bicarbonate/Cit Ac”, every strength and form sold under that name together (Medicare Part D Spending by Drug, file of 2026-06-25).

That average covers 10,059 Part D claims (fills, including refills) for 2024-01-01 to 2024-12-31, across every maker, strength and form under the name.

Medicare's price is not your price.

What Part D spending measures · Which Medicare figure OpenBill compares · How the spread is worked out

What to ask at the counter

None of these figures is your price: what you pay depends on your pharmacy, your insurance, coupons and discounts.

• What is your cash price for 30 tablets? Is it lower than what I would pay through my insurance?
• Which NDC (the 11-digit number on the package) is this? Pharmacies pay $0.35667 to $0.85942 per EA for this product, depending on the NDC.
• If you have Medicare Part D: what is my plan’s copay or coinsurance for it? The Part D average on this page is not what you pay.
• These are questions about price, not medical advice. Do not change or stop a medicine without talking to your prescriber or pharmacist.