Niftran 100mg Capsule should be taken in the dose and duration as advised by the doctor. You may take it with food to avoid nausea, which is a common side effect. It is better to have this medicine at the same time each day to get the most benefit and you should keep on taking this medicine for as long as you are prescribed it, even if your symptoms quickly improve. If you stop taking it too early the infection may return or worsen.