Abstract:Objective:To determine dissolution of evodiamine dispersible tablets and evodiamine which were processed by different methods. Method: According to the second dissolution method(slurry method) in 2010 edition 'Chinese Pharmacopoeia',1%SDS solution of 900 mL was used as dissolution medium,rotation speed was 100 r·min-1,HPLC was as quantitative method to determine dissolution,evodiamine-poloxamer 188 solid dispersions,evodiamine ultrafine powder and evodiamine ultrafine powder-poloxamer 188 solid dispersions were prepared. Result: Ddissolution of evodiamine dispersible tablets was more than 60% at 45 min;Dissolution of evodiamine ultrafine-poloxamer 188 solid dispersions was higher than others. Conclusion: This established dissolution determination method of evodiamine dispersible tablets was simple and rapid,which could be as dissolution detection method of evodiamine dispersible tablets;Evodiamine was almost insoluble in water,but ultrafine grinding combined with solid dispersion technology could significantly improve dissolution of it.