Imatib 400 Tablet should be taken with food, but it is best taken at the same time each day to get the most benefit. You should continue taking it for as long as your doctor tells you. The length of treatment varies depending on your needs and your response to treatment. Taking it the wrong way or taking too much can cause very serious side effects. It may take several weeks or months before you see or feel benefits, but don't stop taking it unless your doctor tells you to.
The most common side effects of this drug include edema, nausea, vomiting, muscle cramps, musculoskeletal pain, diarrhea, rash, fatigue, and abdominal pain. Tell your doctor if you notice sudden and unexpected weight gain. Your doctor may advise you to check your blood cells and liver function regularly while you are taking this medicine. Do not drive or do anything that requires mental focus if you experience dizziness and blurred vision.