FDA pharmacologic class
Potassium Binder
2 medicines are in FDA's class of potassium binders: sodium polystyrene sulfonate (Kionex) and patiromer (Veltassa). 1 of the 2 are listed from generic labelers (FDA NDC Directory, October 8, 2026). The lowest pharmacy cost is sodium polystyrene sulf powder at $0.155 per gram (NADAC).
Which medicines are potassium binder?
| Medicine | Brand names | Generic labelers (all forms) | Pharmacy cost | Boxed warning | Shortage | Recalls since 2012 |
|---|---|---|---|---|---|---|
| Sodium polystyrene sulfonate | Kionex | 11 labelers | $0.155 per gram Sodium polystyrene sulf powder | No | No current entry | 0 |
| Patiromer | Veltassa | none listed | $39.75 per packet 8.4 g powder packet | No | No current entry | 0 |
Source: FDA Established Pharmacologic Class (NDC Directory, openFDA); CMS NADAC of October 7, 2026; FDA shortages and recalls (FDA files October 8, 2026)
What do pharmacies pay?
Each medicine's most widely listed form, per unit, in the NADAC survey: what pharmacies paid, not what a patient pays; strengths differ, so compare like with like.
Source: CMS National Average Drug Acquisition Cost (NADAC) survey, October 7, 2026: what retail pharmacies paid per unit; not a counter price