Antihistamines Flashcards by Kathleen Cruz

Q

Diphenhydramine

A

Histamine-1 blocker = block H1 receptors in CNS = stops allergies

Depress CNS = drowsy

Therapeutic class: Antihistamine

Indication: Allergy, anaphylaxis, sedation

Action: Antagonizes effects of histamine, CNS depression

Nursing Considerations:
● Monitor for drowsiness
● Anticholinergic effects

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Q

Famotidine

A

Histamine -2 blocker = block prod. of stomach acid (think ulcers)

Can help w/ allergies as well - do not make you drowsy

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Q

Ranitidine

A

Histamine-2 blocker = block prod. of stomach acid

Can help w/ allergies as well - do not make you drowsy

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