Pharm

Diphenhydramine

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Diphenhydramine, Benadryl

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