Development of Discriminating Method for Dissolution of Aceclofenac Marketed Formulations

ABSTRACT
The development of a meaningful dissolution procedure for drug products with limited water solubility has been a
challenge to the pharmaceutical industry. Aceclofenac (BCS Class II drug) is a nonsteroidal anti-inflammatory drug. There
is no official dissolution medium available in the literature. In the present study, parameters such as solubility, medium pH,
surfactant type, dissolution behavior of formulations, influence of sink conditions, stability, and discriminatory effect of
dissolution testing were studied for the selection of a proper dissolution medium. Results of solubility data revealed that
solubility increased with an increase in pH. Sink conditions were exhibited in all media except double-distilled water and
0.1 N HCl. The drug and marketed formulations were stable in the dissolution media used. An agitation speed of 50 rpm
showed a more discriminating drug release profile than 75 rpm. The discriminating dissolution method for aceclofenac
formulation is paddle at 50 rpm, 900 mL pH 6.8 phosphate buffer, greater than 80% of the label amount is released over
60 minutes.