About ketotifen
Antihistamine and mast-cell stabilizer
Used for
- Prevention of asthma symptoms
- Relief of allergic symptoms such as sneezing, itching, and runny nose
Usual adult dose
Usually 1 mg twice daily; dosing varies by country and product.
Usual dose in children
Usually 0.5 mg twice daily for children aged 6 months to 3 years; 1 mg twice daily from age 3 years.
Common side effects
- Sleepiness or dizziness
- Increased appetite and weight gain
- Dry mouth
- Irritability, especially in children
Important warnings
- Not for treating sudden asthma attacks
- May cause drowsiness; avoid alcohol and use caution with driving
- Do not stop prescribed asthma medicines without medical guidance
- Use in young children should follow local product guidance
Pregnancy
Use only when clearly needed; discuss with a healthcare professional, as pregnancy data are limited.
Breastfeeding
Small amounts may pass into breast milk; seek professional guidance before use.
Interactions
- Alcohol and sedatives can increase drowsiness
- Other medicines that cause drowsiness may increase sedation
- Oral diabetes medicines may rarely affect blood counts
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 It may be incomplete or out of date.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.