Diphenhydramine

Question 1

Names of Diphenhydramine

Answer 1

Brand: Benadryl
Generic: Diphenhydramine Hydrochloride

Question 2

Classification of Diphenhydramine

Answer 2

Antihistamine, anticholinergic

Question 2

Action of Diphenhydramine

Answer 2

Possesses anticholinergic properties, resulting in antidyskinetic, antiemetic and sedative effects

Question 3

Indications of Diphenhydramine

Answer 3

Is used for allergies, anaphylactic reactions, and dystonic reactions

Question 4

Contraindications of Diphenhydramine

Answer 4

Hypersensitivity to med, and acute asthma attacks

Question 5

Pharmakcokinetics of Diphenhydramine

Answer 5

Metabolized by the liver. Eliminated by urination.

Question 6

Side effects of Diphenhydramine

Answer 6

CNS: drowsiness
CV: hypotension, palpitations
GI/GU: dry mouth, constipation, nausea, dysuria, polyuria, urinary retention
Resp: chest tightness, thickened bronchial secretions, wheezing
Skin: photosensitivity

Question 7

Adult dose of Diphenhydramine

Answer 7

25-50mg PO q4-6h prn; (per oral every 4-6 hrs as needed)

Max: 100mg/dose; 400 mg/day

Question 7

Pediatric 2-5 years old dosage of Diphenhydramine

Answer 7

6.25mg PO q4-6h prn; max: 37.5 mg/day

Question 7

6-11 years old dosage for Diphenhydramine

Answer 7

12.5-25 mg PO q4-6h prn; max 150mg/day

Question 8

OD management

Answer 8

moniter ABC’s and treat symptoms

Question 9

Routes of admin for Diphenhydramine

Answer 9

PO

Question 10

Precautions / special considerations for Diphenhydramine

Answer 10

pregnancy category: class B 
Confused with dicyclomine; dimenhyDRINATE; dipyridamole

Question 11

Storage requirements of Diphenhydramine

Answer 11

store at 68-77ºF