Tykerb 250 mg Tablet should be taken in a dose as recommended by the doctor. You should continue to take it as long as your doctor advises it. The duration of treatment varies according to your needs and response to treatment. Your doctor may advise some tests for liver and heart function while you are taking this medicine. You should check blood pressure while taking Tykerb 250 mg Tablet and inform the doctor if you notice symptoms like severe headache, confusion, or vomiting.