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Diphenhydramine (Diphenhydramine Hydrochloride) - Side Effects and Adverse Reactions

 
 



ADVERSE REACTIONS

The most frequent adverse reactions are italicized.

General

Urticaria; drug rash; anaphylactic shock; photosensitivity; excessive perspiration; chills; dryness of mouth, nose and throat.

Cardiovascular System

Hypotension, headache, palpitations, tachycardia, extrasystoles.

Hematologic System

Hemolytic anemia, thrombocytopenia, agranulocytosis.

Nervous System

Sedation, sleepiness, dizziness, disturbed coordination, fatigue, confusion, restlessness, excitation, nervousness, tremor, irritability, insomnia, euphoria, paresthesia, blurred vision, diplopia, vertigo, tinnitus, acute labyrinthitis, neuritis, convulsions.

Gastrointestinal System

Epigastric distress, anorexia, nausea, vomiting, diarrhea, constipation.

Genitourinary System

Urinary frequency, difficult urination, urinary retention, early menses.

Respiratory System

Thickening of bronchial secretions, tightness of chest and wheezing, nasal stuffiness.



REPORTS OF SUSPECTED DIPHENHYDRAMINE SIDE EFFECTS / ADVERSE REACTIONS

Below is a sample of reports where side effects / adverse reactions may be related to Diphenhydramine. The information is not vetted and should not be considered as verified clinical evidence.

Possible Diphenhydramine side effects / adverse reactions in 51 year old male

Reported by a physician from United States on 2011-12-22

Patient: 51 year old male

Reactions: Drug Abuse

Adverse event resulted in: death

Suspect drug(s):
Diphenhydramine
    Dosage: unk
    Administration route: Oral

Alprazolam
    Dosage: unk
    Administration route: Oral

Methadone
    Dosage: unk
    Administration route: Oral



Possible Diphenhydramine side effects / adverse reactions in 4 year old male

Reported by a health professional (non-physician/pharmacist) from United States on 2011-12-22

Patient: 4 year old male

Reactions: Respiratory Arrest, Injury, Cardiac Arrest

Adverse event resulted in: death

Suspect drug(s):
Diphenhydramine

Ethanol

Isopropanol

Chlorpheniramine Maleate

Acetone

Alprazolam

Dextromethorphan Hydrobromide



Possible Diphenhydramine side effects / adverse reactions in 4 year old male

Reported by a health professional (non-physician/pharmacist) from United States on 2011-12-22

Patient: 4 year old male

Reactions: Respiratory Arrest, Injury, Cardiac Arrest

Adverse event resulted in: death

Suspect drug(s):
Alprazolam

Dextromethorphan Hydrobromide

Ethanol

Acetone

Isopropanol

Diphenhydramine

Chlorpheniramine Maleate



See index of all Diphenhydramine side effect reports >>

Drug label data at the top of this Page last updated: 2011-10-10

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