Effect of polacrilin potassium as disintegrant on bioavailability of diclofenac potassium in tablets : a technical note.

AAPS PharmSciTech
Mrudula H Bele, Diliprao V Derle

Abstract

Polacrilin potassium is an ion exchange resin used in oral pharmaceutical formulations as a tablet disintegrant. It is a weakly acidic cation exchange resin. Chemically, it is a partial potassium salt of a copolymer of methacrylic acid with divinyl benzene. It ionizes to an anionic polymer chain and potassium cations. It was hypothesized that polacrilin potassium may be able to improve the permeability of anionic drugs according to the Donnan membrane phenomenon. The effect of polacrilin potassium on the permeability of diclofenac potassium, used as a model anionic drug, was tested in vitro using diffusion cells and in vivo by monitoring serum levels in rats. The amount of drug permeated across a dialysis membrane in vitro was significantly more in the presence of polacrilin potassium. Significant improvement was found in the extent of drug absorption in vivo. It could be concluded that polacrilin potassium may be used as a high-functionality excipient for improving the bioavailability of anionic drugs having poor gastrointestinal permeability.

References

Nov 1, 1977·Journal of Pharmaceutical Sciences·K F Farng, K G Nelson
Dec 18, 2001·Journal of Pharmaceutical Sciences·B D RegeJ E Polli
Nov 1, 1954·Journal of the American Pharmaceutical Association·T HIGUCHIA POLK

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Citations

Aug 11, 2016·Journal of Pharmaceutical Sciences·Parind Mahendrakumar DesaiPaul Wan Sia Heng
Nov 7, 2013·Drug Development and Industrial Pharmacy·Hadi ValizadehParvin Zakeri-Milani

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