Let's take a minute to talk about your medication. This is leukeran. It is a cancer medication used to treat certain types of leukemia and lymphoma. It may have other uses, too. Leukeran is taken by mouth. It is best to take it once a day on an empty stomach. You should take it exactly as your doctor tells you to, and with a glass of water. You should swallow the tablets whole, and do not crush or cut them. This medicine should be stored in a cool, dry place, like a refrigerator. A common side effect of this medication is an allergic reaction. It can also cause mouth sores, lack of appetite, or diarrhea. If these or other side effects become reasons you want to stop taking this medicine, please talk to your doctor or pharmacist. As with any medicine, other serious side effects can occur. Leukeran has several. You should read the Patient Information Sheet to know what symptoms to watch for and when to report them. You should also discuss these and all possible side effects with your doctor. Before starting leukeran and during treatment, your doctor will order blood tests. These blood tests are to monitor for serious side effects. If you experience dark urine, vomiting, changing skin color, or a rash report this to your doctor immediately. Leukeran may interact with other drugs. You should check with your doctor or pharmacist before taking any new medicines or vaccines. Leukeran can harm unborn babies. Women taking leukeran should not become pregnant or breastfeed. For best results with leukeran, work closely with your healthcare team to monitor your condition.