1. Slow and controlled release preparations can be made by coating controlled release pellets;

2 Large distribution area in the gastrointestinal tract, high bioavailability, and low irritation;

3 Due to the small particle size, it is less affected by the food rhythm of the digestive tract (such as pyloric closure, etc.);

4 The controlled-release pellets can quickly reach the curative concentration of the blood drug, and maintain a stable and long-term effective concentration, and the fluctuation of the blood drug is small; 

5 The fluidity of the pellets is good, the size is uniform, and it is easy to handle (such as coating, dividing doses, etc.) );

6. Improve drug stability and cover up bad taste; 

7. Suitable for the compatibility of compound preparations;

8 The process is simple and suitable for the requirements of industrial mass production.