SODIUM POLYSTYRENE SULF POWDER
For 1 g
Pharmacies pay
$0.09 – $0.47 filed
1 × $0.0924 to $0.47405 per GM (the 10 NDCs differ)
CMS NADAC · nadac-national-average-drug-acquisition-cost-20261014.csv · eff. 2026-09-23 · as of 2026-10-14 · retrieved 2026-10-17
Medicare Part D paid
$0.18 filed
1 × $0.18302 per GM, Part D average
Medicare's price is not your price.
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
The spread
0.39× – 2.0× estimated
Medicare paid between 0.39× and 2.0× what pharmacies pay, depending on the NDC.
Part D averages every strength and form sold under “Sodium Polystyrene Sulfonate*” / “Sodium Polystyrene Sulfonate” into one figure, so it is not specific to this NDC.
OpenBill calculation · DSD_PTD_RY26_P04_V10_DY24_BGM.csv + nadac-national-average-drug-acquisition-cost-20261014.csv · NADAC eff. 2026-09-23 (file of 2026-10-14, retrieved 2026-10-17) · Part D 2024-01-01 to 2024-12-31 (file of 2026-06-25, retrieved 2026-10-18)
Cost-plus estimate
$5.10 – $5.54 estimated
NADAC for the pack + 15% + $5.00 fee per fill
This is a model, not a price any pharmacy quoted. Shipping is not included. For a pack this cheap, the $5.00 fee is most of the estimate. How it is worked out
OpenBill calculation · nadac-national-average-drug-acquisition-cost-20261014.csv · NADAC eff. 2026-09-23 (file of 2026-10-14, retrieved 2026-10-17)
Open the interactive card Change the quantity, type what you were charged, and see every record in full.
What it is
SODIUM POLYSTYRENE SULF POWDER is how the CMS NADAC file names this product. The FDA NDC Directory lists it as sodium polystyrene sulfonate.
FDA gives its dosage form as “powder” and “powder, for suspension” and its route as “oral; rectal” and “oral”.
FDA lists 6 labelers (the companies named on the label) for its NDCs, among them KVK-Tech, Inc., SUNRISE PHARMACEUTICAL, INC. and PuraCap Laboratories, LLC.
FDA lists no Established Pharmacologic Class for it.
The NADAC file of 2026-10-14 prices it under 10 NDCs (National Drug Codes).
NADAC classes it as a generic drug (rate-setting class G), and does not mark it as sold over the counter.
What pharmacies pay
Pharmacies pay $0.09 – $0.47 for 1 g, depending on the NDC ($0.0924 to $0.47405 per GM), by the CMS NADAC file of 2026-10-14; that price took effect on 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; 5, calculated based on package size.
What NADAC measures · NADAC explanation codes
The 6 labelers
| Labeler | NDCs | Pharmacies pay per unit |
|---|---|---|
| Chartwell RX, LLC | 2 | $0.15518 to $0.47405 per GM filed |
| Epic Pharma, LLC | 2 | $0.15518 to $0.47405 per GM filed |
| KVK-Tech, Inc. | 2 | $0.0924 to $0.47405 per GM filed |
| SUNRISE PHARMACEUTICAL, INC. | 2 | $0.0924 to $0.47405 per GM filed |
| CMP Pharma, Inc. | 1 | $0.0924 per GM filed |
| PuraCap Laboratories, LLC | 1 | $0.15518 per GM filed |
All 10 NDCs, with labeler and price
- 10702-0036-15 · KVK-Tech, Inc. · $0.47405 per GM · eff. 2026-09-23 filed
- 10702-0036-45 · KVK-Tech, Inc. · $0.0924 per GM · eff. 2026-09-23 filed
- 11534-0166-16 · SUNRISE PHARMACEUTICAL, INC. · $0.47405 per GM · eff. 2026-09-23 filed
- 11534-0166-44 · SUNRISE PHARMACEUTICAL, INC. · $0.0924 per GM · eff. 2026-09-23 filed
- 24658-0760-16 · PuraCap Laboratories, LLC · $0.15518 per GM · eff. 2026-09-23 filed
- 42806-0013-94 · Epic Pharma, LLC · $0.47405 per GM · eff. 2026-09-23 filed
- 42806-0013-96 · Epic Pharma, LLC · $0.15518 per GM · eff. 2026-09-23 filed
- 46287-0012-16 · CMP Pharma, Inc. · $0.0924 per GM · eff. 2026-09-23 filed
- 62135-0340-53 · Chartwell RX, LLC · $0.15518 per GM · eff. 2026-09-23 filed
- 62135-0340-62 · Chartwell RX, LLC · $0.47405 per GM · eff. 2026-09-23 filed
Other strengths, forms and brands
2 other products in the NADAC file share the FDA nonproprietary name sodium polystyrene sulfonate with SODIUM POLYSTYRENE SULF POWDER.
| Product | Pharmacies pay per unit | Medicare per unit |
|---|---|---|
| KIONEX 15 GM/60 ML SUSPENSION | $0.30564 per ML filed | $0.3657 per ML filed |
| SODIUM POLYSTYRENE SULF POWDER this page | $0.0924 to $0.47405 per GM filed | $0.18302 per GM filed |
| SPS 15 GM/60 ML SUSPENSION | $0.38512 to $0.43798 per ML filed | We don’t know yet |
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. 2026-04-22, 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 $0.18 for 1 g, at an average of $0.18302 per GM in 2024 (2024-01-01 to 2024-12-31) for “Sodium Polystyrene Sulfonate*” and “Sodium Polystyrene Sulfonate”, every strength and form sold under that name together (Medicare Part D Spending by Drug, file of 2026-06-25).
That average covers 50,770 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 1 g? Is it lower than what I would pay through my insurance?
- Which NDC (the 11-digit number on the package) is this? Pharmacies pay $0.0924 to $0.47405 per GM for this product, depending on the NDC.
- How much is in the package I am getting? This page uses 1 g; your package may hold a different amount.
- 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.
Questions
- Why is the comparison with Medicare for SODIUM POLYSTYRENE SULF POWDER labelled estimated?
- Beyond what the card shows, the records give these reasons: The Part D figure covers 2024-01-01 to 2024-12-31; the NADAC price is from the file of 2026-10-14. Part D spending basis, as the Part D record states it: Part D 2024 average spend per dosage unit for Sodium Polystyrene Sulfonate* / Sodium Polystyrene Sulfonate: all makers, strengths, forms and routes combined, claim-weighted; gross cost incl. dispensing fees and patient pay, before rebates. Unit taken as NADAC's GM. Joined on generic name. *: CMS says this average reflects multiple routes of administration, which may have different unit prices. All 10 NADAC NDCs the name join matched to it have an FDA route including ORAL.
- Why does this page start at 1 g?
- The FDA package descriptions of this product’s NDCs give different amounts (15 g, 453.6 g, 454 g). So the card starts at 1 GM; change it to match your prescription.