Gemtero 1gm injection is a chemotherapy medication containing the active ingredient gemcitabine. It is used to treat bladder cancer, breast cancer, ovarian cancer, pancreatic cancer, and non-small cell lung cancer. Cancer is a disorder in which cells multiply in an uncontrolled and abnormal manner. Talk to your doctor if you have heart disease, liver disorders, kidney disorders, recently had radiotherapy, or vaccinated before taking this medicine.