A Brief Introduction To Active Pharmaceutical Ingredients

The complete definition of active pharmaceutical ingredient in ICH Q7A: any substance or mixture of substances intended for use in the manufacture of drugs, and when used in pharmaceuticals, becomes an active ingredient of the drug. This substance has pharmacological activity or other direct effects in the diagnosis, treatment, symptom relief, treatment, or prevention of diseases, or can affect the function or structure of the body.
The active ingredients of the medicine. Only when raw materials are processed into pharmaceutical preparations can they become clinically applicable drugs.