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Pharm Res. 1985 Nov;2(6):262-6. doi: 10.1023/A:1016333432224.

Program for evaluating drug dissolution kinetics in preformulation.

Pharmaceutical research

M Nicklasson, A B Magnusson

Affiliations

  1. Research and Development Laboratories, Pharmaceutics, Solid Systems, Astra Läkemedel AB, S-151 85, Södertälje, Sweden.

PMID: 24271121 DOI: 10.1023/A:1016333432224

Abstract

The in vitro dissolution kinetics of various drugs were studied at different experimental conditions using both a centrically rotating disc method and a modified excentrically rotating disc method. The combination of these two methods provides a preformulation program that includes many important pharmaceutical and biopharmaceutical parameters related to drug dissolution. The influence of the hydrodynamic conditions on the dissolution rate was demonstrated and the intrinsic dissolution tendency was obtained. Further, the acid dissociation constant, diffusion coefficient and enthalpy of dissolution can be calculated from data obtained from the rotating disc experiments. The relationship between dissolution rate and aqueous solubility of each drug tested is also considered.

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