| abstract |
A process for preparing a spray-dried product for improving the rate of dissolution of the active ingredient comprises the steps of (i) mixing a crystalline active ingredient, which has a dissolution rate in unstirred water at 25°C of greater than 15 minutes at a concentration of 14ppm of the active ingredient, with a starch derivative, a second carrier material, and optionally xanthan gum to form a suspension, dispersion or solution of the active ingredient, (ii) homogenizing the mixture at a pressure of at least 4000 psig (2.758 x 10 7 Pa), and (iii) spray-drying the homogenized mixture, the spray- dried active ingredient having an increased dissolution rate in water compared to the unencapsulated active ingredient. |