Have you or a loved one been prescribed the drug Dasatinib as a treatment for cancer? It's normal to feel a little scared and nervous when that happens. You may have many questions about what kind of medicine it is, how to use it, and what to be careful about. So today, let's learn everything about this medicine in a very simple way, as if we were talking to a friend.
What is this medicine called Dasatinib?
Simply put, dasatinib is a special drug that stops cancer cells from growing. It works as a 'targeted therapy'. This means that this drug doesn't just attack cells in the body. Instead, it identifies certain special proteins that help cancer cells divide and spread, and targets and stops their activity. It works like a skilled sniper.
This medicine is mainly used to treat two types of leukemia.
- Chronic Myeloid Leukemia (CML)
- Acute Lymphoblastic Leukemia (ALL)
Sometimes your doctor may prescribe this medication for other medical conditions as well. Therefore, ask your doctor exactly why you have been prescribed this medication.
Things you need to tell your doctor before starting medication
Your doctor should have a complete picture of your health before starting this medication. This is important for your safety. Therefore, if you have any of the following conditions, be sure to tell your doctor about them.
- If you have bleeding problems or a tendency to bleed.
- If you have heart disease or an irregular heartbeat.
- If you have a weakness in your immune system.
- If you have previously been told that your blood potassium or magnesium levels are low.
- If you have an allergic reaction to this dasatinib medicine, lactose, or any other medicine, food, or dye.
- This is especially important if you are pregnant, trying to get pregnant, or breastfeeding .
Saying these things without hiding them will greatly help with the success of the treatment and your safety.
How to use this medicine correctly?
This is a very important part. To get the most out of the medicine, you need to use it correctly.
- How to take: Swallow this tablet whole with a glass of water. Do not break, crush, or chew the tablet. Doing so may affect how well the medicine works.
- With food: You can take this medicine with or without food. There is no problem about that.
- When to take: Try to take your medicine at the same time each day, as prescribed by your doctor. If you miss a dose, take the next dose at the next scheduled time. Never take two doses at once to make up for a forgotten dose.
- Medical advice: Do not stop taking your medication without your doctor's advice.
- Very important: Do not drink grapefruit or grapefruit juice while taking this medication. Grapefruit can change the way your body absorbs this medication, which can cause dangerous side effects.
- Antacids: Take antacids containing aluminum, calcium, or magnesium (e.g., Digene, Gelusil) 2 hours before or 2 hours after taking this medicine. Do not take it together. Also, tell your doctor if you are taking other medications that reduce stomach acid (e.g., Omeprazole, Famotidine).
If you are giving this medicine to children, you should talk to your pediatrician about it. Although it is recommended for children over one year of age under some circumstances, there are some things to be careful of.
What to do if you overdose?
If you think you have taken more than the prescribed dose, go to the nearest hospital Emergency Department (ETU) immediately . Or call the National Poisons Information Centre at the Colombo National Hospital for advice. Do not take this lightly.
Other drugs that may interact with dasatinib (Drug Interactions)
When taking this medicine, you should also be careful about other medications you are taking. Some medications can interact with dasatinib, reducing its effectiveness or causing dangerous side effects.
Below are just a few examples. Tell your doctor about all the medications you take (including vitamins, herbal products, and pain relievers).
| Drugs that may interact with dasatinib | |
|---|---|
| Drug category | Examples |
| Do not take these with anything. | |
| Medications and others that affect heart rhythm | Cisapride, Dronedarone, Pimozide, Thioridazine |
| Antifungal | Fluconazole, Posaconazole |
| These may react (seek medical advice) | |
| Painkillers | Acetaminophen (Paracetamol), Aspirin, Ibuprofen, Naproxen (NSAIDS) |
| Antibiotics | Clarithromycin, Erythromycin, Rifampin |
| Antifungals | Itraconazole, Ketoconazole |
| Medicines for HIV/AIDS | Antiviral medicines |
| Medicines for migraines | Carbamazepine, Phenobarbital, Phenytoin |
| Anticoagulants | Warfarin |
| Herbal products | St. John's Wort |
Side effects to be aware of when taking this medicine
Like any medicine, dasatinib can cause side effects. Some are minor, but others require immediate medical attention.
| Side effects that you should report to your doctor immediately | |
|---|---|
| Allergic Reactions | Skin rash, itching, swelling of the face, lips or tongue. |
| Abnormal bleeding | Black tarry stools, vomit that looks like coffee grounds, dark red/brown urine, red spots on the skin, bleeding from the nose and gums. |
| Symptoms of a Heart Attack | Difficulty breathing, pain/stiffness in the chest, neck, back, or arms, extreme fatigue. |
| Symptoms of a stroke | Vision changes, confusion, difficulty speaking, sudden numbness or weakness in the face/arm/leg, difficulty walking. |
| Symptoms of infection | Fever, chills, cough, sore throat. |
| Body swelling/weight gain | Swelling in the legs, ankles, or other parts of the body, sudden weight gain. |
| Other serious symptoms | Dry cough, fast or irregular heartbeat, bone pain, muscle twitching, blistering/peeling of the skin, including in the mouth, seizures. |
| Usually not dangerous (but tell your doctor if it persists) | |
| Digestive system problems | Stomach ache, nausea, vomiting, flatulence, constipation. |
| Other minor ailments | Headache, loss of appetite, muscle pain. |
Special awareness about pregnancy and breastfeeding
This is very important. Avoid getting pregnant while taking this medicine and for 30 days after stopping the medicine. Men should also avoid fathering a child while taking this medicine and for 30 days after stopping it. This can cause serious harm to the unborn baby. Also, avoid breastfeeding while taking this medicine and for 2 weeks after the last dose.
Take-Home Message
- Dasatinib is a powerful drug that targets cancer cells. Follow your doctor's instructions exactly.
- Tell your doctor about all medications, vitamins, and any medical conditions you are taking before starting the medication.
- Swallow the pill whole without breaking, crushing, or chewing.
- Avoid drinking grapefruit juice completely while taking this medication.
- Avoid taking antacids for heartburn close to the time of taking the medicine.
- If you experience any serious side effects such as unusual bleeding, difficulty breathing, chest pain, or body swelling, seek medical advice immediately.
- Avoid pregnancy and breastfeeding while taking this medicine and for the prescribed period.
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