1. A reasonable process should be used to extract most of the active ingredients from Chinese herbal medicines to ensure the efficacy.
2, in order to prevent microbial contamination and growth and deterioration of the liquid, it should be produced according to the injection process to achieve semi-sterile or sterile state.
3, the liquid should be basically clear, and pay attention to color, fragrance, taste.
4, the addition of flavoring agents and other additives should not affect the efficacy of the main drug, and is harmless to animals.