Fexofenadine

Definition

Fexofenadine is a second-generation antihistamine used to treat allergy symptoms such as hay fever and urticaria. It works by blocking histamine H1 receptors, reducing allergic reactions.

5 Must Know Facts For Your Next Test

1. Fexofenadine does not cross the blood-brain barrier significantly, minimizing sedation side effects.
2. It is available in both prescription and over-the-counter forms.
3. Common brand names include Allegra.
4. Fexofenadine is typically taken once or twice daily, with or without food.
5. It is generally well-tolerated but can cause side effects like headache and nausea.

Review Questions

• What type of drug is Fexofenadine and what symptoms does it treat?
• Why does Fexofenadine have minimal sedative effects compared to first-generation antihistamines?
• What are common side effects associated with Fexofenadine?

Related terms

Cetirizine: A second-generation antihistamine used to treat allergies, known for causing more sedation than Fexofenadine.

Loratadine: Another second-generation antihistamine that treats allergy symptoms with minimal sedation.

Pseudoephedrine: A decongestant often combined with antihistamines to relieve nasal congestion.