About promethazine + carbocisteine
Antihistamine and mucolytic
Used for
- Relieves allergy symptoms such as runny nose and sneezing
- Helps loosen mucus in chesty coughs
Usual adult dose
Dosing varies by country and formulation; follow the product leaflet or prescriber’s directions.
Usual dose in children
Not recommended for children under 2 years. Age-specific doses vary; follow the local product leaflet.
Common side effects
- Sleepiness and dizziness
- Dry mouth or blurred vision
- Nausea, vomiting, or stomach discomfort
- Allergic reactions, rarely
Important warnings
- Promethazine can cause marked drowsiness; avoid alcohol and driving if affected.
- Do not use for coughs with excessive secretions or breathing difficulty without medical assessment.
- Promethazine is contraindicated in children under 2 years because of breathing risks.
- Check the leaflet for age restrictions and exact dosing; products differ by country.
Pregnancy
Use only if a clinician considers it necessary; safety depends on timing and local product guidance.
Breastfeeding
Promethazine may cause infant drowsiness and can reduce milk supply; seek professional guidance before use.
Interactions
- Alcohol, opioids, sleeping medicines, and sedatives can increase drowsiness and breathing suppression.
- Other medicines with anticholinergic effects may worsen dry mouth, constipation, or blurred vision.
- Monoamine oxidase inhibitors may intensify promethazine 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 It may be incomplete or out of date.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.