Make certain your health care professional knows if you are on any special diet, such as a low-sugar diet. The syrup contains carbohydrates.
Ketotifen is used to help prevent asthma attacks. It will not relieve an asthma attack that has already started.
Ketotifen must be taken continuously in order to be effective.
Continue taking your current asthma medications until instructed otherwise by your doctor.
Ketotifen may be taken with or without food.
Dosing
The dose of ketotifen will be different for different patients. Follow your doctor's orders or the directions on the label. The following information includes only the average doses of ketotifen. If your dose is different, do not change it unless your doctor tells you to do so.
The amount of medicine that you take depends on the strength of the medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine.
For oral dosage form (tablets and syrup):
For asthma:
Adults and children 3 years of age and older—The usual dose is 1 milligram (mg) (1 tablet or 5 milliliters [mL] of syrup) twice daily, once in the morning and once in the evening.
Infants and children from 6 months to 3 years of age—Dose is based on body weight and must be determined by the doctor. It is usually 0.25 mL (50 mcg or 0.05 mg) of syrup per kilogram (kg) (110 micrograms [mcg] or 0.110 mg per pound) of body weight twice daily, once in the morning and once in the evening.
Missed dose
If you miss a dose of ketotifen, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not double doses.
Storage
Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Keep from freezing.
Keep out of the reach of children.
Do not keep outdated medicine or medicine no longer needed.
 Detailed Ketotifen ophthalmic dosage information
