Geffy 250mg Tablet can be taken with or without food, but better to have it same time every day for better results. You should continue to take it as long as your doctor advises for it. The duration of treatment varies according to your need and response to treatment. You should take it exactly as your doctor has advised. Taking it in the wrong way or taking too much can cause very serious side effects. It may take several weeks or months for you to see or feel the benefits but do not stop taking it unless your doctor tells you to.