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What is Diphenhydramine?

Diphenhydramine is an antihistamine. It is used to relieve irritated, itchy, watery eyes; sneezing; and runny nose caused by hay fever, allergies, or the common cold. It may also be used to prevent and treat motion sickness, or to control abnormal movements in early stage parkinsonian syndrome.

Reported Purpose & Efficacy

Reasons and Efficacy
Purpose # of patients
# of patients with evaluations Efficacy
Major
Moderate
Slight
None
Can’t tell
Insomnia 95 28 Efficacy_major Efficacy_moderate Efficacy_slight Efficacy_none
Allergies 78 14 Efficacy_major Efficacy_moderate Efficacy_slight Efficacy_cant_tell
Other 53 13 Efficacy_major Efficacy_moderate Efficacy_slight Efficacy_cant_tell
Food allergy 26 1 Efficacy_major
Sleep problems 24 6 Efficacy_major Efficacy_moderate Efficacy_slight Efficacy_none
Itching (pruritus) 11 4 Efficacy_major Efficacy_slight

See all 314 patients currently taking Diphenhydramine

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Reported Dosages

Frequently reported dosages based on patients currently taking Diphenhydramine. See all 45 dosages ►

  50mg as needed 2 50mg as needed daily 2 25mg as needed 25mg as needed 25 mg daily 50 mg daily 75 mg daily 100 mg daily 150 mg daily
  25 Number of Patients: 25 5 Number of Patients: 5 9 Number of Patients: 9 26 Number of Patients: 26 56 Number of Patients: 56 48 Number of Patients: 48 70 Number of Patients: 70 15 Number of Patients: 15 14 Number of Patients: 14 4 Number of Patients: 4  

Reported Stop Reasons

Why Patients Stopped Taking Diphenhydramine (multiple reasons could be selected)
Reason # Patients Percentage of patients
Other 36   Other: 38%
Course of treatment ended 20   Course of treatment ended: 21%
Did not seem to work 17   Did not seem to work: 18%
Doctor's advice 13   Doctor's advice: 14%
Side effects too severe 9   Side effects too severe: 9%
Personal research 7   Personal research: 7%
Not indicated 5   Not indicated: 5%
Expense 4   Expense: 4%

See all 93 patients who’ve stopped taking Diphenhydramine

Reported Duration See details about how long patients take this treatment ▼

Currently Taking Diphenhydramine

A bar graph

0-1 month 1-3 months 3-6 months 6 months-1year 1-2 years 2 years or more

Stopped Taking Diphenhydramine

A bar graph

0-1 month 1-3 months 3-6 months 6 months-1year 1-2 years 2 years or more

Reported Adherence, Burden & Cost See details from patient evaluations ▼

Adherence

Taking treatment as prescribed

Adherence of Diphenhydramine

Always
 49 54%
Usually
 28 31%
Sometimes
 9 10%
Never
 4 4%

Burden

Difficulty being on treatment

Burden of Diphenhydramine

Very
 1 1%
Somewhat
 2 2%
A little
 11 12%
Not at all
 76 84%

Cost

Paid out of pocket

Cost of Diphenhydramine

$200+
 0 0%
$100-199
 0 0%
$50-99
 1 2%
$25-49
 1 2%
< $25
 55 96%

See more information, including instructions, precautions, side effects, and interactions.

Report created on May 24, 2012.