What are unilateral preparations and compound preparations?

Unilateral preparation refers to a preparation made of a single drug with the same name as the bulk drug.

Compound preparation refers to a mixture of two or more drugs, which can be Chinese medicine, western medicine or a mixture of Chinese and western medicine. In prescription science, compound preparation refers to a prescription consisting of two or more overlapping prescriptions. In addition, other drugs are added to the original prescription, or prescription preparations with the same dosage of each drug in the prescription are also called compound preparations. Compound medicine has a large dosage and strong curative effect, and is often used to treat more complicated diseases and syndromes. It can also be called the heavy side.