What is Diphenhydramine (IV or IM)?

Category: Prescription Drugs

Most popular types: Benadryl IV

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Diphenhydramine IV/IM is an antihistamine. It is given via intramuscular injection or intravenously to treat and prevent allergic reactions.

Reported purpose & perceived effectiveness
Purpose Patients Evaluations Perceived Effectiveness
Itching 4 1
Migraine 4 1
Anaphylaxis 1 0
Autoimmune urticaria 1 1
Cluster headaches 1 2

Show all 8 reasons taken


  • Major
  • Moderate
  • Slight
  • None
  • Can't tell

Side effects

Side effects as an overall problem

Side effects as an overall problem
Severity Evaluations
Severe 1
Moderate 2
Mild 4
None 0

Commonly reported side effects and conditions associated with Diphenhydramine (IV or IM)

Side effect Patients
Chest pain 1
Nausea and vomiting 1
Racing heart feeling 1
Sedation 1
Sleepiness 1
Somnolence 1

Show all 8 reported side effects

Dosages

Based on patients currently taking Diphenhydramine (IV or IM)

Dosage Patients
25 mg five times daily 1
100 mg twice daily 1

Why patients stopped taking Diphenhydramine (IV or IM)

Multiple reasons could be selected

Reason Patients
Course of treatment ended 4
Other 2
Did not seem to work 1
Doctor's advice 1
Side effects too severe 1
See all 9 patients who've stopped taking Diphenhydramine (IV or IM)

Duration

Currently taking Diphenhydramine (IV or IM)

Duration Patients
1 - 6 months 1
2 - 5 years 1

Stopped taking Diphenhydramine (IV or IM)

Duration Patients
Less than 1 month 5
1 - 6 months 3
2 - 5 years 1
Adherence
Adherence Evaluations
Always 3
Usually 2
Sometimes 0
Never taken as prescribed 2
Burden
Burden Evaluations
Very hard to take 0
Somewhat hard to take 2
A little hard to take 0
Not at all hard to take 5
Cost per month
Cost per month Evaluations
$200+ 0
$100-199 0
$50-99 0
$25-49 0
< $25 1
Not specified 6

What people switch to and from

Patients started taking Diphenhydramine (IV or IM) after stopping:

Treatment Patients
Diphenhydramine (Benadryl) 1
Trazodone (Desyrel) 1

Patients stopped taking Diphenhydramine (IV or IM) and switched to:

Treatment Patients
Botulinum Toxin Type A (Botox) 1
Doxylamine-pyridoxine (Diclegis) 1
Trazodone (Desyrel) 1
Last updated:
There are no evaluations for Diphenhydramine (IV or IM).