Applies to dexchlorpheniramine: compounding powder, oral syrup, oral tablet, oral tablet extended release.

Gastrointestinal

Gastrointestinal side effects have included dryness of mouth and throat, epigastric distress, anorexia, nausea, vomiting, diarrhea, and constipation.^[Ref]

Genitourinary

Genitourinary side effects have included urinary frequency, difficult urination, urinary frequency, and early menses.^[Ref]

Hypersensitivity

Hypersensitivity reactions have included drug rash, anaphylactic shock, and photosensitivity.^[Ref]

Dermatologic

Dermatologic side effects have included urticaria.^[Ref]

General

General side effects have included excessive perspiration, chills, and dryness of nose.^[Ref]

Hematologic

Hematologic side effects have included hemolytic anemia, thrombocytopenia, and agranulocytosis.^[Ref]

Nervous system

Nervous system side effects have included sedation, sleepiness, dizziness, disturbed coordination, fatigue, confusion, restlessness, excitation, nervousness, tremor, irritability, insomnia, euphoria, paresthesias, hysteria, neuritis, and convulsions.^[Ref]

Ocular

Ocular side effects have included blurred vision and diplopia.^[Ref]

Other

Otic side effects have included vertigo, tinnitus, and acute labyrinthitis.^[Ref]

Respiratory

Respiratory side effects have included thickening of bronchial secretions, tightness of chest, wheezing, and nasal stiffness.^[Ref]

Frequently asked questions

• Can you take antihistamines when pregnant?