Benadryl Allergy

Generic Drug
Diphenhydramine HCl

 

Dosage Forms (Warner Lambert Consumer)

Softgel capsules: 25 mg

Tablets: 25 mg

Chewable Tabs: 12.5 mg, grape flavor

*Liquid: 6.25 mg/5 ml, cherry flavor

Adult Dosing Guidelines

  • NA

Pediatric Dosing Guidelines

  • for runny nose and/or cough: 0.5 to 1 mg / kg q6-8h
  • not to exceed 300mg / day

Triage Questions About Treatment or Related Issues

  • Previous unusual reactions to antihistamines? (allergy, hyperactivity)
  • How long have symptoms persisted?
  • Pre-existing medical conditions?
  • Can patient swallow/chew pills?
  • Drug or dye allergies?

General Information

MOA: antagonizing agents that compete for histamine receptor sights. Histamines are released from lysed cells and cause nasal vasodilation that leads to congestion and runny nose. Also, possesses anti-tussive effects.

WARNING:

  • Use with caution in children with acute or chronic respiratory impairment .
  • Use with caution if history of thyroid or heart disease or diabetes.
  • Do not use in children with history of hypersensitivity.

Adverse Reactions/Side Effects
Decreased mental alertness, hyperactivity, drowsiness, dizziness, dry mouth/nose.

Natural Products or Nutritional Interactions (if applicable)
May be taken with food or milk if GI upset occurs.