When your doctor prescribes a cancer drug called Dabrafenib for you or someone in your family, it's normal to have a lot of questions and even a little fear. "What will happen with this?", "How do I use this?", "Are there any side effects?" come to mind. So today, let's talk about this drug, how to use it, and the things to be careful about in a very simple way that you can understand.
Simply put, what is Dabrafenib?
Dabrafenib is a special medicine used to treat cancer. Its brand name is Tafinlar. This medicine is mainly used for:
- Melanoma is a type of skin cancer.
- A type of lung cancer called non-small cell lung cancer .
- For thyroid cancer .
- For other solid tumors with a specific genetic marker.
What happens in this is that the growth of cancer cells is inhibited by blocking specific signals that help them grow. That means this is a targeted therapy . It's like knowing exactly who the enemy is and attacking only them.
Things you need to tell your doctor before starting medication
Before your doctor prescribes this medication, it is very important to know your complete health history. Be sure to tell your doctor if you have any of the following conditions:
| Your situation | Why should I notify? (in brief) |
|---|---|
| Diabetes | This medicine may change blood sugar levels. |
| Eye diseases or vision problems | Dabrafenib can affect the eyes. |
| G6PD deficiency | This is a genetic condition that affects blood cells. |
| If you are scheduled to have surgery soon | The medication may need to be stopped temporarily. |
| Bleeding problems or a history of them | The medicine may increase the risk of bleeding. |
| Kidney or liver disease | The medicine may affect the way it is excreted from the body. |
| If you are pregnant or trying to get pregnant | This is very important. The medicine can cause serious harm to the baby in the womb. |
| If you are breastfeeding | The medicine can pass to the baby through breast milk. |
| Allergies to other medications or foods | To find out if you are allergic to Dabrafenib or any of its ingredients. |
How exactly do you use this medicine?
To get the most out of this medicine, it is very important to use it correctly.
- Swallow this capsule with a glass of water.
- Most importantly: This medicine should be taken on an empty stomach . That means at least one hour before a meal, or at least two hours after a meal .
- Never take this medicine with food.
- Do not take this medicine with grapefruit juice. It may affect the effectiveness of the medicine.
- Do not break, crush, or chew the capsule. Swallow it whole.
- Take the prescribed dose when your doctor tells you to. Do not change the dose or stop taking the medicine on your own.
- If you are taking medications such as antacids or H2 blockers for a condition such as gastritis, avoid taking them within 2 hours before or after taking Dabrafenib.
Very important: This medicine is for you only. Never give your medicine to anyone else, even if they have the same illness as you. The right treatment for each patient is different.
What to do if you miss a dose of medication?
If you miss a dose, take it as soon as you remember. However, if it is less than 6 hours until your next dose, skip the missed dose and take your next dose at the scheduled time. Never take a double dose.
Special points to be aware of when taking the medicine
You need to pay special attention to your health while taking this medicine.
Pregnancy and birth control (very important!)
- For women: Avoid becoming pregnant while taking this medicine and for 2 weeks after stopping the medicine . It can cause serious harm to an unborn baby. If you are trying to become pregnant or think you may be pregnant, tell your doctor right away.
- For men: If you are taking this medicine, you must use a condom when having sex with a woman who could become pregnant. This should be continued for 2 weeks after stopping the medicine. This is because if your partner becomes pregnant, the baby may have birth defects. If your partner becomes pregnant, tell your doctor right away.
- Breastfeeding: Avoid breastfeeding while taking this medicine and for 2 weeks after stopping.
Other points
- See your doctor regularly: See your doctor on scheduled appointments to see if the medication is working and if there are any side effects.
- Changes in vision: If you experience blurred vision, eye pain, or sensitivity to light, report it immediately.
- Skin testing: There is a small risk of developing other types of skin cancer while taking this medicine. So if you notice any new spots, lumps, changes in color, or sores that don't heal on your skin, tell your doctor right away.
Possible Side Effects
Like any medicine, Dabrafenib can cause side effects. Some are serious, while others are mild. The important thing is to be aware of these symptoms and take action quickly if necessary.
| Type of side effect | Features to know |
|---|---|
| Side effects that should be reported to your doctor or hospital immediately | |
| Allergic reactions | Skin rash , itching, swelling of the face, lips or tongue, difficulty breathing. |
| Symptoms of bleeding | Black or bloody stools; vomit that looks like coffee grounds; red spots on the skin; bleeding from the gums or nose. |
| Heart failure signs | Difficulty breathing; fast, irregular heartbeat; sudden weight gain; swelling of the ankles, feet, and hands; extreme fatigue. |
| Symptoms of high blood sugar | Thirst and hunger more than usual; frequent urination; extreme fatigue; blurred vision. |
| Other serious symptoms | Changes in vision, eye pain, severe headache, dizziness, fever with skin rash and swollen lymph nodes, skin blistering, yellowing of the skin. |
| Things to tell your doctor if they persist or are bothersome | |
| Common side effects | Diarrhea, hair loss, joint pain, muscle pain, vomiting. |
Overdosage
If you think you have taken too much of this medicine, immediately call the National Poisons Information Centre at the Colombo National Hospital , or go to the Emergency Treatment Unit (ETU) of the nearest hospital.
Take-Home Message
- Dabrafenib is a special drug that targets cancer cells.
- Always take this medicine on an empty stomach . Never take it with grapefruit juice.
- Tell your doctor about all other medications, vitamins, and any medical conditions you may have.
- Avoid becoming pregnant while taking this medication and for 2 weeks after stopping (this applies to both women and men).
- Seek immediate medical attention if you notice serious side effects such as new skin changes, vision problems, signs of bleeding, or heart problems.
- This medicine is for you only. Never share it with others.
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