Diphenhydramine Flashcards
1
Q
Generic Name
A
Diphenhydramine
2
Q
Trade Name
A
Benadryl
3
Q
Class
A
Antihistamine
4
Q
Action
A
Blocks histamines at h1 receptor sites inhibiting actions of histamine release, reverses dystonic reactions and extrapyramidal symptoms (involuntary movement disorders)
5
Q
Indications
A
Mild to moderate allergic reactions, anaphylaxis (give after administering epinephrine), dystonic reactions and other extrapyramidal symptoms
6
Q
Diphenhydramine Contraindications
A
Hypersensitivity MAOI’s neonates
7
Q
Adult Dose:
A
25–50 mg iV at 25 mg/min, repeated PRN
8
Q
Pedi Dose:
A
1–2 mg/kg iV (iM not recommended)
9
Q
Side Effects
A
Confusion Dizziness Drowsiness Dry Mouth Nausea Palpitations Tachycardia Vomiting
10
Q
Onset
A
15-30 min
11
Q
Duration
A
3-12 hrs
