Histamine (H1) Receptor Antagonists Flashcards
1
Q
Common Facts
A
Common name: antihistamines
Commonly used to treat: allergies
Common adverse reaction: diphenhydramine can cause sedation
Notes: available over-the-counter (OTC)
2
Q
Mechanism of Action
A
Release of histamine causes vasodilation, swelling, itchiness, runny nose, watery eyes
H1 receptor antagonists compete with histamine for H1 receptor sites
Binding of antihistamines prevents allergic responses
3
Q
Aerius
A
Generic name: desloratadine
4
Q
Allegra
A
Generic name: fexofenadine
5
Q
Benadryl
A
Generic name: diphenhydramine
6
Q
Claritin
A
Generic name: loratadine
