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Antihistamines: Classification & Action by Subha2000 is a document available to read on EtoBox.

What is Antihistamines: Classification & Action about?

The document discusses histamine and antihistamines. It notes that histamine is released from mast cells and causes allergic reactions through H1, H2, and H3 receptors. Antihistamines work by competing with histamine at H1 receptor sites and are classified as first or second generation. First generation drugs can cross the blood brain barrier and cause sedation while second generation drugs do not cross the barrier or cause sedation. Antihistamines are used to treat allergic conditions, insect bites, and pr

Author

Subha2000

Language

EN