Asthafen
Asthafen contains Ketotifen, which acts as a relatively selective, non-competitive histamine H1-receptor antagonist and a mast cell stabilizer. It inhibits the release of inflammatory mediators like histamine and leukotrienes, thereby reducing airway hyper-responsiveness and preventing asthmatic and allergic reactions.
Dosage by Body Weight
Adults and children over 3 years: Typically 1 mg (1 tablet or 5 mL syrup) twice daily, taken with food. In patients sensitive to sedation, a lower starting dose (0.5 mg at night) is recommended, gradually increasing to the full dose. Children aged 6 months to 3 years: Typically 0.5 mg (2.5 mL syrup) twice daily.
- Body Weight
- Below 5 kg
- Dose
- Not recommended
- Frequency
- Do not use
- Tracking Notes
- Safety and efficacy in infants under 6 months of age or below 5 kg have not been established.
- Body Weight
- 5-7 kg
- Dose
- 0.25 mg to 0.5 mg (1.25 mL to 2.5 mL syrup)
- Frequency
- Twice daily
- Tracking Notes
- Use only under strict medical supervision. Usually applicable for infants older than 6 months.
- Body Weight
- 8-10 kg
- Dose
- 0.5 mg (2.5 mL syrup)
- Frequency
- Twice daily
- Tracking Notes
- Corresponds to the standard pediatric dose for children aged 6 months to 3 years.
- Body Weight
- 11-15 kg
- Dose
- 0.5 mg to 1.0 mg (2.5 mL to 5 mL syrup)
- Frequency
- Twice daily
- Tracking Notes
- Dose may be adjusted by the pediatrician based on severity of symptoms and patient response.
- Body Weight
- 16-20 kg
- Dose
- 1.0 mg (5 mL syrup or 1 tablet)
- Frequency
- Twice daily
- Tracking Notes
- Standard dose for children over 3 years of age. May cause mild drowsiness initially.
| Body Weight | Dose | Frequency | Tracking Notes |
|---|---|---|---|
| Below 5 kg | Not recommended | Do not use | Safety and efficacy in infants under 6 months of age or below 5 kg have not been established. |
| 5-7 kg | 0.25 mg to 0.5 mg (1.25 mL to 2.5 mL syrup) | Twice daily | Use only under strict medical supervision. Usually applicable for infants older than 6 months. |
| 8-10 kg | 0.5 mg (2.5 mL syrup) | Twice daily | Corresponds to the standard pediatric dose for children aged 6 months to 3 years. |
| 11-15 kg | 0.5 mg to 1.0 mg (2.5 mL to 5 mL syrup) | Twice daily | Dose may be adjusted by the pediatrician based on severity of symptoms and patient response. |
| 16-20 kg | 1.0 mg (5 mL syrup or 1 tablet) | Twice daily | Standard dose for children over 3 years of age. May cause mild drowsiness initially. |
Formulation
Purpose
Asthafen is primarily used for the long-term prevention (prophylaxis) of bronchial asthma. It is also used to treat and prevent allergic conditions such as allergic rhinitis, allergic conjunctivitis, and chronic urticaria (hives). It is not effective for treating an acute asthma attack.
Generic Name
KetotifenScheduled Drug
Yes. This medicine should be supplied or used only according to applicable prescription and regulatory requirements.