1_Antihistamine Practice Questions

Front

What is hydroxyzine primarily used for?

Back

Hydroxyzine is primarily used for anxiety relief.

Front

What unique formulation options are available for cetirizine?

Back

Cetirizine is available in oral, injectable, and ophthalmic formulations.

Front

What type of isomer is olopatadine?

Back

Olopatadine is a geometric isomer.

Front

Which H1-selective antihistamine has the highest affinity for H1 receptors?

Back

The H1-selective antihistamine with the highest affinity for H1 receptors is 3.

Front

Which antihistamine is best for seasonal allergies without causing drowsiness?

Back

Fexofenadine is the best agent for seasonal allergies that will not cause drowsiness.

Front

What is the primary action of antihistamines?

Back

Antihistamines block the action of histamine at H1 receptors.

Front

What are the common side effects of first-generation antihistamines?

Back

Common side effects include drowsiness, dry mouth, and dizziness.

Front

How do second-generation antihistamines differ from first-generation?

Back

Second-generation antihistamines are less likely to cross the blood-brain barrier, causing less sedation.

Front

What is the mechanism of action of antihistamines?

Back

Antihistamines work by competitively inhibiting the binding of histamine to H1 receptors.

Front

What is the role of antihistamines in allergic reactions?

Back

Antihistamines help alleviate symptoms of allergic reactions such as itching, sneezing, and runny nose.