About carbomethyl cysteine
Mucolytic
Used for
- Thins thick mucus, making it easier to cough up
- Helps manage mucus in chronic bronchitis and other respiratory conditions
Usual adult dose
Usually 750 mg three times daily initially, reduced to 1,500 mg daily in divided doses when symptoms improve.
Usual dose in children
Ages 2–4: 62.5–125 mg four times daily; ages 5–11: 250 mg three times daily. Approved doses vary by country.
Common side effects
- Nausea or vomiting
- Diarrhea or stomach discomfort
- Skin rash
- Rare stomach bleeding or severe allergic reactions
Important warnings
- Not suitable with an active stomach or intestinal ulcer
- Use cautiously with a history of stomach ulcers
- Not suitable for children under two years
- Vomiting blood or black stools may indicate serious bleeding
Pregnancy
Not recommended during pregnancy, particularly the first trimester, because safety information is limited.
Breastfeeding
Safety information is limited; generally not recommended during breastfeeding.
Interactions
- Cough suppressants may prevent clearance of loosened mucus
- Medicines that increase stomach bleeding risk require caution
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 It may be incomplete or out of date.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.