When administered as an injection, the dosage and duration of treatment with chlorpheniramine maleate depend on the patient’s age, weight, and response to the medication. The usual dosage for adults is 10-20 mg, administered every 4-6 hours as needed.
As with any medication, chlorpheniramine maleate may cause side effects in some people. Common side effects may include drowsiness, dry mouth, and dizziness. Less common side effects may include confusion, blurred vision, and difficulty urinating.
