Answer: E
This question examines drugs and their naming. The name of a drug includes its generic name, chemical name and trade name. A trade name, also known as a brand name, usually refers to the final product of a drug, that is, a drug containing one or more active pharmaceutical ingredients in a determined dosage and form. The trade name of a drug is chosen by the pharmaceutical company itself, and like a trademark, it can be registered and applied for patent protection. The generic name of a drug, also known as the International Nonproprietary Name (INN), is the name recommended by the World Health Organization. INN usually refers to the active drug substance, not the final drug, so it is the only name used by pharmaceutical researchers and medical personnel. Therefore, a drug has only one generic drug name, which is more convenient to use than a trade name. . The generic name of a drug is not subject to patent or administrative protection. It is the name of the active ingredient indicated in all documents, materials, teaching materials and drug instructions. The chemical name of a drug is named according to its chemical structural formula, with a parent as the basic structure, and then the positions and names of other substituents are marked. "Berberine hydrochloride" is the common name of the drug, and "berberine hydrochloride" is its alias.