It is very important that your doctor check your progress at regular visits. This will allow your doctor to see if the medicine is working properly and to decide if you should continue to take it. If your symptoms worsen, you should check with your doctor.
Ketotifen may cause some people to become drowsy, dizzy, or less alert than they are normally. Make sure you know how you react to ketotifen before you drive, use machines, or do anything else that could be dangerous if you are dizzy or are not alert.
Ketotifen may cause some people to become excited, irritable, or nervous or to have trouble in sleeping. These are symptoms of central nervous system stimulation and are especially likely to occur in children.
For patients with diabetes:
The syrup form of ketotifen may affect blood sugar levels. If you notice a change in the results of your blood or urine sugar tests or if you have any questions, check with your doctor.
