About dexchlorpheniramine maleate
First-generation antihistamine
Used for
- Relief of allergy symptoms, including sneezing, runny nose, and itchy or watery eyes.
- Relief of itching and hives.
Usual adult dose
Usually 2 mg every 4–6 hours; maximum 12 mg daily.
Usual dose in children
Ages 2–5: 0.5 mg every 4–6 hours; ages 6–11: 1 mg every 4–6 hours. Maximums vary by age and product guidance.
Common side effects
- Drowsiness
- Dry mouth, nose, or throat
- Blurred vision
- Constipation or difficulty urinating
Important warnings
- May impair alertness; avoid driving if affected.
- Alcohol and sedatives can increase drowsiness.
- Use cautiously with glaucoma, breathing problems, or urinary retention.
- Not recommended for children under 2 years unless directed by a clinician.
Pregnancy
Use only when needed and after professional advice; pregnancy safety information is limited.
Breastfeeding
May cause infant drowsiness or reduce milk supply; seek professional advice before use.
Interactions
- Alcohol, opioids, sleep medicines, and other sedatives increase drowsiness.
- Monoamine oxidase inhibitors can intensify effects; avoid use during treatment and for 14 days afterward.
- Other medicines with anticholinergic effects may increase dry mouth, blurred vision, or urinary problems.
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.