Qualified Medication Aides (QMA) Practice Exam

Which of the following is an example of an antihistamine?

1. Benadryl

2. Dimetapp

3. Tylenol

4. Advil

The correct answer is: Dimetapp

The correct choice represents an example of an antihistamine because it specifically refers to a medication that is designed to counteract the effects of histamine, a substance released during allergic reactions that can cause symptoms such as itching, runny nose, and sneezing. Antihistamines work by blocking the receptor sites for histamine, thereby alleviating these symptoms. Benadryl, a well-known antihistamine, is frequently used to treat allergic reactions and symptoms of hay fever. Dimetapp also falls into this category, as it contains diphenhydramine, an antihistamine, as an active ingredient. Tylenol, on the other hand, is primarily a pain reliever and fever reducer, which does not have antihistaminic properties. Similarly, Advil is an anti-inflammatory medication (ibuprofen) and does not serve the purpose of blocking histamine. Thus, recognizing that antihistamines are specifically intended to address allergy-related symptoms is crucial in identifying the correct medication from the provided options.