Pharm
Diphenhydramine
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Diphenhydramine
, Benadryl
See Also
Sedating Antihistamine
Indications
See
Sedating Antihistamine
Local Anesthesia
for
Lidocaine
Allergy
Dosing
Standard
Adult: 25-50 mg PO/IV/IM q6h
Child: 5 mg/kg/day divided qid (12.5 mg/5 ml)
Preparation
Diphenhydramine 1% (for
Local Anesthesia
)
Dilute Diphenhydramine 5% in
Normal Saline
(1:4)
Longer delay to onset of action than
Lidocaine
Shorter duration of action than
Lidocaine
Adverse Effects
See
Sedating Antihistamine
See
Anticholinergic Toxicity
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