Excipient (pharmacologically inactive substance)
What is it?
Polacrilin is an ion exchange resin used in oral pharmaceutical formulations as a tablet disintegrant. Physically, ion exchange resins are small plastic beads with a diameter of roughly 0.6 millimeters.
 Bele MH, et al. Effect of Polacrilin Potassium as Disintegrant on Bioavailability of Diclofenac Potassium in Tablets : a Technical Note. AAPS PharmSciTech. 2012 Sep; 13(3): 756–59. Accessed February 27, 2015 at http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3429670/