About This Drug
Dasatinib is used to treat cancer. It is given orally (by mouth).
Possible Side Effects
- Bone marrow depression. This is a decrease in the number of white blood cells, red blood cells, and platelets. This may raise your risk of infection, make you tired and weak (fatigue), and raise your risk of bleeding
- Fluid retention - swelling of your legs, ankles and/or feet, or fluid build-up around your lungs, heart or elsewhere
- Loose bowel movements (diarrhea)
- Trouble breathing
- Joint, muscle and bone pain
- Abnormal bleeding – symptoms may be coughing up blood, throwing up blood (may look like coffee grounds), red or black tarry bowel movements, abnormally heavy menstrual flow, nosebleeds or any other unusual bleeding.
Note: Each of the side effects above was reported in 15% or greater of patients treated with dasatinib. Not all possible side effects are included above.
Warnings and Precautions
- Severe bone marrow depression
- Abnormal bleeding which may be life-threatening – symptoms may be coughing up blood, throwing up blood (may look like coffee grounds), red or black tarry bowel movements, abnormally heavy menstrual flow, nosebleeds or any other unusual bleeding.
- Severe fluid build-up (retention) events
- Trouble breathing because high pressure in the arteries of your lungs.
- Abnormal heart beat and/or changes in the tissue of the heart. Some changes may happen that can cause your heart to have less ability to pump blood.
- Severe allergic skin reaction. You may develop blisters on your skin that are filled with fluid or a severe red rash all over your body that may be painful.
- Tumor lysis syndrome: This drug may act on the cancer cells very quickly. This may affect how your kidneys work.
Note: Some of the side effects above are very rare. If you have concerns and/or questions, please discuss them with your medical team.
- This drug contains lactose
How to Take Your Medication
- You can take the medicine whole with or without food. Do not chew, cut or crush it.
- If you take antacids, take this drug at least 2 hours before or 2 hours after you take the antacid.
- Missed dose: If you vomit or miss a dose, take your next dose at the regular time, and contact your physician. Do not take 2 doses at the same time and do not double up on the next dose.
- Handling: Wash your hands after handling your medicine, your caretakers should not handle your medicine with bare hands and should wear latex gloves.
- This drug may be present in the saliva, tears, sweat, urine, stool, vomit, semen, and vaginal secretions. Talk to your doctor and/or your nurse about the necessary precautions to take during this time.
- Storage: Store this medicine in the original container at room temperature. Discuss with your nurse or your doctor how to dispose of unused medicine.
Treating Side Effects
- Manage tiredness by pacing your activities for the day.
- Be sure to include periods of rest between energy-draining activities.
- To decrease infection, wash your hands regularly.
- Avoid close contact with people who have a cold, the flu, or other infections.
- Take your temperature as your doctor or nurse tells you, and whenever you feel like you may have a fever.
- To help decrease bleeding, use a soft toothbrush. Check with your nurse before using dental floss.
- Be very careful when using knives or tools.
- Use an electric shaver instead of a razor.
- Drink plenty of fluids (a minimum of eight glasses per day is recommended).
- If you throw up or have loose bowel movements, you should drink more fluids so that you do not become dehydrated (lack water in the body from losing too much fluid).
- If you get diarrhea, eat low-fiber foods that are high in protein and calories and avoid foods that can irritate your digestive tracts or lead to cramping.
- Ask your nurse or doctor about medicine that can lessen or stop your diarrhea.
- To help with nausea and vomiting, eat small, frequent meals instead of three large meals a day. Choose foods and drinks that are at room temperature. Ask your nurse or doctor about other helpful tips and medicine that is available to help or stop lessen these symptoms.
- Keeping your pain under control is important to your well-being. Please tell your doctor or nurse if you are experiencing pain.
- If you get a rash do not put anything on it unless your doctor or nurse says you may. Keep the area around the rash clean and dry. Ask your doctor for medicine if your rash bothers you.
Food and Drug Interactions
- Do not eat grapefruit or drink grapefruit juice while taking this medicine.Grapefruit and grapefruit juice may raise the levels of dasatinib in your body. This could make side effects worse.
- Check with your doctor or pharmacist about all other prescription medicines and over-the-counter medicines and dietary supplements (vitamins, minerals, herbs and others) you are taking before starting this medicine as there are known drug interactions with dasatinib. Also, check with your doctor or pharmacist before starting any new prescription or over-the-counter medicines, or dietary supplements to make sure that there are no interactions.
- Avoid the use of St. John’s Wort while taking dasatinib as this may lower the levels of the drug in your body, which can make it less effective
- Drugs that treat heartburn and stomach upset such Maalox®, Mylanta®, Protonix®, Nexium®, Prilosec®, Pepcid®, Tagamet®, and Zantac® may lower the effect of your cancer treatment if taken with dasatinib. If you take antacids, take this drug at least 2 hours before or 2 hours after you take the antacid.
When to Call the Doctor
Call your doctor or nurse if you have any of these symptoms and/or any new or unusual symptoms:
- Fever of 100.5 F (38 C) or higher
- Fatigue that interferes with your daily activities
- Feeling dizzy or lightheaded
- Trouble breathing
- Pain in your chest
- Weight gain of 5 pounds in one week
- Feeling that your heart is beating in a fast or not normal way (palpitations)
- Easy bleeding or bruising
- Blood in your urine, vomit (bright red or coffee-ground) and/or stools ( bright red, or black/tarry)
- Coughing up blood
- Loose bowel movements (diarrhea) 4 times a day or loose bowel movements with lack of strength or a feeling of being dizzy
- Nausea that stops you from eating or drinking and/or is not relieved by prescribed medicines
- Throwing up more than 3 times a day
- Pain that does not go away, or is not relieved by prescribed medicines
- A headache that does not go away
- New rash and/or itching
- Rash that is not relieved by prescribed medicines
- Flu-like symptoms: fever, headache, muscle and joint aches, and fatigue (low energy, feeling weak)
- Signs of tumor lysis: Confusion or agitation, decreased urine, nausea/vomiting, diarrhea, muscle cramping, numbness and/or tingling, seizures.
- If you think you may be pregnant
- Pregnancy warning: This drug can have harmful effects on the unborn baby. Women of childbearing potential should use effective methods of birth control during your cancer treatment and for at least 30 days after treatment. Let your doctor know right away if you think you may be pregnant.
- Breastfeeding warning: Women should not breast feed during treatment and for 2 weeks after treatment because this drug could enter the breast milk and cause harm to a breast feeding baby.
- Fertility warning: In men and women both, this drug may affect your ability to have children in the future. Talk with your doctor or nurse if you plan to have children. Ask for information on sperm or egg banking.
Revised March 2018
This information is intended to provide helpful health information to the general public and is not to be used in place of any medical, health, psychological, or any other kind of personal professional services. The information herein does not cover all possible uses, actions, precautions, side effects, or interactions of the medicines mentioned, nor is the information intended as medical advice for individual problems or for making an evaluation as to the risks and benefits of taking a particular medication. The dose, method of administration and contraindications for any administered medication should be confirmed before use. UPMC specifically disclaims all responsibility for any liability, loss or risk, personal or otherwise, which is incurred as a consequence, directly or indirectly, of the use and application of any medication mentioned herein.