(w/w) BTB in CP/Dhaykol was macroscopically heterogenous, the mixtures of CP, CAP and BTB did not show macroscopic agglomerates (Figure ). Furthermore, drug overload became evident at the concentration of 40.00% (w/w) due to the formation of a layer of crystals of the BTB on the Petri dish surface. However, for the samples at 26.67%