About dexchlorpheniramine maleate
First-generation antihistamine
Used for
- Relief of hay fever and other allergy symptoms
- Relief of itching and hives
Usual adult dose
Adults: usually 2 mg every 4–6 hours; maximum 12 mg daily.
Usual dose in children
Children aged 6–11: usually 1 mg every 4–6 hours; maximum 6 mg daily. Not generally used under age 6.
Common side effects
- Drowsiness
- Dry mouth, nose, or throat
- Blurred vision
- Constipation or difficulty urinating
Important warnings
- May impair alertness; avoid driving if drowsy.
- Avoid alcohol and other medicines that cause sleepiness.
- Use caution with glaucoma, urinary problems, or breathing conditions.
- Seek urgent help for severe allergic reactions; this medicine does not replace emergency treatment.
Pregnancy
Use only when recommended by a healthcare professional; safety information is limited.
Breastfeeding
May cause infant drowsiness or reduce milk supply; use only with professional guidance.
Interactions
- Alcohol, sedatives, opioids, and sleep medicines can increase drowsiness.
- Monoamine oxidase inhibitors can intensify side effects.
- Other anticholinergic medicines can increase dry mouth, constipation, and 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 It may be incomplete or out of date.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.