It is very important that your doctor check your progress at regular visits to make sure that this medicine is working properly. Blood tests will be needed to check for unwanted effects. Be sure to keep all appointments.
Using this medicine while you are pregnant can harm your unborn baby. If you think you have become pregnant while using the medicine, tell your doctor right away.
Use an effective form of birth control to keep from getting pregnant. Some forms of birth control include condoms, diaphragms, or birth control pills. Men using this medicine should use a condom to avoid pregnancy in their partner.
Dasatinib can temporarily lower the number of white blood cells in your blood, increasing the chance of getting an infection. It can also lower the number of platelets, which are necessary for proper blood clotting. If this occurs, there are certain precautions you can take, especially when your blood count is low, to reduce the risk of infection or bleeding:
- If you can, avoid people with infections. Check with your doctor immediately if you think you are getting an infection or if you get a fever or chills, cough or hoarseness, lower back or side pain, or painful or difficult urination.
- Check with your doctor immediately if you notice any unusual bleeding or bruising; black, tarry stools; blood in the urine or stools; or pinpoint red spots on your skin.
- Be careful when using a regular toothbrush, dental floss, or toothpick. Your medical doctor, dentist, or nurse may recommend other ways to clean your teeth and gums. Check with your medical doctor before having any dental work done.
- Do not touch your eyes or the inside of your nose unless you have just washed your hands and have not touched anything else in the meantime.
- Be careful not to cut yourself when you are using sharp objects such as a safety razor or fingernail or toenail cutters.
- Avoid contact sports or other situations where bruising or injury could occur.
Dasatinib may cause fluid retention. Check with your doctor right away if you have a decrease in amount of urine; noisy or rattling breathing; shortness of breath; swelling of the fingers, hands, feet, or lower legs; troubled breathing at rest; or weight gain.
This medicine can cause changes in the heart rhythm, such as a condition called QT prolongation. It may change the way your heart beats and cause fainting or serious side effects in some patients. Check with your doctor right away if you have any symptoms of heart rhythm problems, such as fast, pounding, or irregular heartbeats.
Check with your doctor right away if you have the following symptoms while taking this medicine: chest discomfort or pain; decreased urine output; fast, irregular or pounding heartbeat; shortness of breath; swelling of the feet or lower legs; troubled breathing; or unusual tiredness or weakness. These could be symptoms of a serious heart problem.
Using this medicine may cause headache, muscle or joint pain, skin rash, or unusual tiredness or weakness. If these symptoms persist and become worse, check with your doctor.
This medicine may increase your risk of having a condition called pulmonary arterial hypertension (high blood pressure in the vessels of your lungs). This may occur at anytime during treatment with this medicine. Check with your doctor right away if you have the following symptoms: shortness of breath, troubled breathing, tiredness, or swelling all over your body (fluid retention).
Do not eat grapefruit or drink grapefruit juice while you are using this medicine. Grapefruit and grapefruit juice may change the amount of this medicine that is absorbed in the body.
Do not take other medicines unless they have been discussed with your doctor. This includes prescription or nonprescription (over-the-counter [OTC]) medicines and herbal (e.g., St. John's wort) or vitamin supplements.