Celdach 100mg Injection is utilized in the treatment of cancer of colon and rectum. It shows its working by stopping or slowing down the growth of cancer cells. Celdach 100mg Injection is given as an injection into vein by a qualified medical professional. Your doctor will decide what dose is necessary and how often you need to take it. This will depend on what you are being treated for and may change from time to time. 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.