5 Flucel 500 Injection 10ml helps treat cancers of stomach, colon, rectum, breast, and lungs.It is given as an injection into a vein, or as a drip (infusion) into a vein or artery.The dose and the number of treatment cycles needed will depend on the type and stage of cancer that is being treated.It may cause dizziness and visual changes. Do not drive or do anything requiring concentration until you know how it affects you.Your doctor may regularly monitor your blood cells and liver function during treatment with this medicine.