About chlorpheniramine maleate syrup
First-generation antihistamine
Used for
- Relief of sneezing, runny nose, and itchy or watery eyes from allergies
- Relief of itching from hives and other allergic skin reactions
Usual adult dose
4 mg every 4–6 hours as needed; maximum 24 mg daily.
Usual dose in children
Ages 2–5: 1 mg every 4–6 hours; maximum 6 mg daily. Ages 6–11: 2 mg every 4–6 hours; maximum 12 mg daily. Not recommended under age 2.
Common side effects
- Drowsiness
- Dry mouth, nose, or throat
- Blurred vision
- Constipation or difficulty urinating
Important warnings
- Can cause drowsiness; avoid driving if affected.
- Alcohol and sedatives can increase drowsiness.
- Use caution with glaucoma, breathing problems, or difficulty urinating.
- Do not use to make a child sleepy.
Pregnancy
Safety information is limited; use only when recommended by a healthcare professional.
Breastfeeding
May cause infant drowsiness or irritability and may reduce milk supply; seek professional guidance.
Interactions
- Alcohol, sleeping medicines, opioids, and other sedatives
- Monoamine oxidase inhibitors, including use within the past 14 days
- Other medicines with anticholinergic effects
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 It may be incomplete or out of date.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.