Although many substances can be considered drugs, which drug definition is the most appropriate?
1. Any substance that is found in nature or that normally occurs in the body
2. Any substance that is synthesized and tested in the laboratory setting
3. Any substance that is taken to prevent, cure, or reduce symptoms of a medical condition
4. Any substance that can be isolated from natural substances in nature
Correct Answer: 3
Rationale 1: A drug is not a substance that is found in nature or that normally occurs in the human body.
Rationale 2: A drug is not only a substance that is synthesized and tested.
Rationale 3: A drug is considered to be any substance that is taken to prevent, cure, or reduce symptoms of a medical condition.
Rationale 4: A drug is not only a substance isolated from natural substances.
Global Rationale: A drug is considered to be any substance that is taken to prevent, cure, or reduce symptoms of a medical condition. A drug is not a substance that is found in nature or that normally occurs in the human body; it is not any substance that is synthesized and tested in the laboratory setting, nor is it only a substance isolated from natural substances.
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