Nausea, vomiting, diarrhea, lip/mouth sores, and loss of appetite may occur. Nausea and vomiting can be severe. In some cases, your doctor may prescribe medication to prevent or relieve nausea and vomiting. Eating several small meals, not eating before treatment, or limiting activity may help lessen some of these effects. If these effects persist or worsen, tell your doctor or pharmacist promptly.Temporary hair loss may occur. Normal hair growth should return after treatment has ended.Remember that your doctor has prescribed this medication because he or she has judged that the benefit to you is greater than the risk of side effects. Follow your doctor's orders and keep all medical/lab appointments to lower your risk of serious side effects.Tell your doctor immediately if any of these unlikely but serious side effects occur: easy bruising/bleeding, bloody/black/tarry stools, lower back or side pain, decreased or missed menstrual periods, decreased sexual function, pinkish urine, painful/difficult urination, unusual weight loss, vomit that looks like coffee grounds.This medication can lower the body's ability to fight an infection. Tell your doctor promptly if you develop any signs of an infection such as fever, chills, or persistent sore throat.Tell your doctor immediately if any of these rare but very serious side effects occur: painful/difficult breathing, chest pain, coughing up blood, persistent cough, unusual lumps/masses under the skin, pain/redness/swelling of the arms/legs, stomach/abdominal pain, yellowing eyes/skin, dark urine, unusual tiredness.A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any of the following symptoms of a serious allergic reaction: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.In the US -Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.