Question

1. Using the chemical structure to classify drugs is: (Select one best answer)

		Broad and based on therapeutic intent
		Limited to a few select drugs and used when copying existing drugs and making minor chemical variations
		Used by the FDA on package inserts of prescription drugs
		Limited to drugs with a common and specific mechanism of action

2. Metoprolol, propranolol, and carvedilol are drugs that could be classified together (grouped together) based on their: (Select all that apply)

		Chemical structures
		Therapeutic category
		Pharmacological category
		Route of administration category

3. Drugs are classified into pharmacological categories based on: (Select one best answer)

		Chemical structure
		Route of administration
		Therapeutic use
		Mechanism of action

Answer 1

Answer 1: Limited to a few select drugs and used when copying existing drugs and making minor chemical variations.

Rationale: The classification of drugs on the basis of chemical structure have same pharmacological action as well as skeletal structure. There are slight or minute variation in the chemical structure.

Answer 2: Therapeutic category, Pharmacological category.

Rationale: Metoprolol, propranolol, and carvedilol are drugs belongs to the beta Blocker category and used in treating high blood pressure and heart diseases.

Answer 3: Therapeutic use, Mechanism of action.