Which of the following medications can cause sedation as a side effect?

Which of the following medications can cause sedation as a side effect?

• A. Acetaminophen
• B. Albuterol
• C. Antihistamines
• D. Metformin

Answer: (C)

Antihistamines are known to cause sedation as a common side effect, particularly the first-generation antihistamines such as diphenhydramine. These medications work by blocking histamine receptors in the brain, which can lead to drowsiness. This sedative effect is often utilized in over-the-counter sleep aids or for the treatment of allergies when sedation is considered a beneficial side effect. In contrast, acetaminophen is primarily an analgesic and antipyretic with minimal sedative effects. Albuterol, a bronchodilator, is designed to open airways and does not typically cause sedation; its primary side effects may include tremors or increased heart rate. Metformin, used for managing type 2 diabetes, is not associated with sedation either; its common side effects are gastrointestinal, like nausea and diarrhea. Thus, antihistamines stand out as the medication group here that is recognized for causing sedation.

Antihistamines are known to cause sedation as a common side effect, particularly the first-generation antihistamines such as diphenhydramine. These medications work by blocking histamine receptors in the brain, which can lead to drowsiness. This sedative effect is often utilized in over-the-counter sleep aids or for the treatment of allergies when sedation is considered a beneficial side effect.

In contrast, acetaminophen is primarily an analgesic and antipyretic with minimal sedative effects. Albuterol, a bronchodilator, is designed to open airways and does not typically cause sedation; its primary side effects may include tremors or increased heart rate. Metformin, used for managing type 2 diabetes, is not associated with sedation either; its common side effects are gastrointestinal, like nausea and diarrhea. Thus, antihistamines stand out as the medication group here that is recognized for causing sedation.