Antihistamines Quiz

Which of the following is a first-generation H1 receptor antihistamine?

• Fexofenadine

• Loratadine

• Diphenhydramine

• Cetirizine

Which of the following is a second-generation H1 receptor antihistamine?

• Chlorpheniramine

• Desloratadine

• Cimetidine

• Ranitidine

What is the brand name for Loratadine?

• Benadryl

• Claritin

• Zantac

• Tagamet

Which H2 receptor antihistamine is known by the brand name Zantac?

• Cimetidine

• Ranitidine

• Famotidine

• Nizatidine

What is the primary action of antihistamines?

• Increase histamine production

• Block the action of histamine

• Release histamine

• Convert histamine to another compound

Which generation of antihistamines is known to cause sedation?

• First generation

• Second generation

• Third generation

• Fourth generation

Which of the following antihistamines does not cross the blood-brain barrier?

• Diphenhydramine

• Chlorpheniramine

• Loratadine

• Cimetidine

Which receptor do antihistamines primarily target?

• H1 receptors

• H2 receptors

• H3 receptors

• H4 receptors

Which of the following is an H2 receptor antihistamine?

• Cetirizine

• Famotidine

• Fexofenadine

• Desloratadine

What is the effect of histamines on H1 receptors?

• Causes sedation

• Causes more respiratory type symptoms

• Increases heart rate

• Decreases blood pressure