Active substance

Poliestireno sulfonato calcio

2 products from 2 companies contain this in Spain.

2 prescription onlypolvo para suspensión oralpolvo para suspensión oral y rectal

Prescription only

RESINCALCIO POLVO PARA SUSPENSION ORAL99,75 G DE POLIESTIRENO SULFONATO CÁLCICO POR 100Prescription onlypolvo para suspensión oral Laboratorios Rubio S.A. · Poliestireno sulfonato calcio · V03AE01 SORBISTERIT POLVO PARA SUSPENSION ORAL/RECTAL379,5-474,5 g Poliestirensulfonato calcio/500 mgPrescription onlypolvo para suspensión oral y rectal Fresenius Medical Care Nephrologica Deutschland Gmbh · Poliestireno sulfonato calcio · V03AE01

Same substance is not the same product. Strength, form, release mechanism and other ingredients all differ. Whether one can replace another is a decision for a pharmacist.