We all know that fighting cancer is not an easy journey. During this journey, your doctor may have prescribed you a new medication. If the name of that medication is Tucatinib, you probably have a lot of questions in your mind. "What will this do?", "How will this affect the body?", "What are the side effects?", "What should I know?" Things like that are probably running through your mind. Don't worry, it's very normal. Today, we're going to talk to you like a friend about this medication, Tucatinib (often called TUKYSA), in a simple and clear way.
Simply put, what is Tucatinib?
Tucatinib is a very advanced, specific drug that fights cancer cells. We call these types of drugs "targeted therapy." Think of it this way: cancer cells are rogue cells that divide rapidly and spread throughout the body without any control. They need special messages to grow and spread so quickly. These messages come through certain proteins in our bodies.
Tucatinib works by inactivating a protein that carries these important messages that tell cancer cells to "grow and spread." In other words, it blocks the pathway that carries those messages. Then, the ability of cancer cells to grow and spread is greatly reduced, or even stopped altogether.
This medicine is mainly used for:
- For breast cancer
- For colorectal cancer
The important thing is that this is not a medicine for all types of cancer. Your doctor will only prescribe it after examining the nature of your cancer and confirming that this medicine is the best fit for you.
Things you need to tell your doctor before starting medication
Before starting this medication, it is very important that your doctor has a complete picture of your health condition. Because that information will determine whether this medication is safe for you and what the dosage should be. Therefore, if you have any of the following conditions, be sure to tell your doctor about it without hiding anything .
- Liver disease: If you currently have or have had any liver disease.
- Allergies: If you have an allergy to this medicine, Tucatinib, any other medicine, food, dyes, or preservatives.
- If you are trying to get pregnant or are pregnant: If you are pregnant or hoping to get pregnant, you should definitely tell your doctor.
- If you are breastfeeding: If you are a mother who is breastfeeding a child, also inform the doctor.
How exactly do I use this medicine?
As the doctor says, taking the right dose at the right time has a great impact on the success of the treatment. If you have any questions about this, never be shy to ask the doctor.
| Advice | Description |
|---|---|
| How to take | This is an oral pill. Take it exactly as prescribed by your doctor. |
| Time | Try to take your medicine at the same time every day. Making this a habit will help you forget to take your medicine less often. |
| Swallowing the pill | Swallow the tablet whole with water. Never break, crush, or chew the tablet. |
| Taking with food | You can take it with or without food. However, if you experience stomach upset or nausea, taking the medicine with a small amount of food may help reduce the discomfort. |
| Stopping treatment | Continue taking the medication until your doctor tells you to stop. Do not stop taking the medication on your own, even if you feel a little better. |
What to do if you miss a dose of medication?
If you forget to take a dose, don't worry. This is normal. If you do, skip the missed dose altogether . Take your next dose at the scheduled time. Do not take two pills at once to make up for a missed dose. Doing so may increase the dose.
What if I take too much medicine?
If you have even the slightest suspicion that you have taken more medicine than you think, do not ignore it. Go immediately to the nearest hospital Emergency Treatment Unit (ETU). Or call the National Poisons Information Centre at the Colombo National Hospital for advice.
This medicine has been prescribed for you only. For your medical condition only. Therefore, never share this medicine with anyone else.
Other medications that may interact with this medicine (Interactions)
This is a very important part. Tucatinib is a drug that can interact with many other medications. When two medications interact in this way, either the effectiveness of Tucatinib may be reduced, or the side effects may be increased. Therefore, give your doctor a complete list of all the medications you are taking , including prescription medications, over-the-counter pain relievers, vitamins, herbal remedies, Ayurvedic medicines, and anything else you are using.
Below are some medications that should never be taken with Tucatinib. This list is not complete. Therefore, it is important to tell your doctor about all medications you are taking.
| Medications that should never be taken with Tucatinib | |
|---|---|
| Alfuzosin, Silodosin | Alprazolam, Triazolam, Midazolam |
| Lovastatin, Simvastatin (some cholesterol-lowering medications) | Dihydroergotamine, Ergotamine (some medications used for migraines) |
| Dronedarone | Pimozide |
| Lurasidone | Ranolazine |
Additionally, medications like Digoxin, Gemfibrozil, and Rifampin can also interact with this. So always inform your doctor.
Things to be especially careful about when taking medication
General discomfort and not stopping treatment
It is normal to feel a little tired and uncomfortable during chemotherapy, as it can also affect healthy cells. This happens to many people. If you experience any side effects, tell your doctor. But don't stop taking the medicine just because you feel uncomfortable, unless your doctor tells you to stop.
Special considerations for pregnancy and birth control
This is very important.
- For women: You should avoid becoming pregnant while taking this medicine and for one week after stopping treatment. This medicine can cause serious birth defects in an unborn baby. Therefore, you should take a pregnancy test before starting treatment to make sure you are not pregnant. It is essential to use a reliable form of birth control during treatment and for one week after. Talk to your doctor about the method that is right for you.
- For men: If you are taking Tucatinib, it is important to prevent your partner from becoming pregnant. Therefore, it is essential to use a condom during sex during treatment and for one week after stopping treatment. If your partner becomes pregnant while taking this medicine, it can cause serious harm to the unborn baby.
Breastfeeding
Avoid breastfeeding your baby completely while taking this medicine and for one week after stopping treatment.
Can it affect fertility?
This medicine may affect fertility. If you have any concerns about this, talk to your doctor about it.
Side effects that may occur due to medication
Like any medicine, Tucatinib can cause some side effects. However, not everyone gets them. Some people may not have any side effects. The important thing is to know what these side effects are and what to do if they occur.
| Serious side effects that should be reported to the doctor immediately | |
|---|---|
| Severe allergic reactions | Skin rash, itching, swelling of the face, lips, tongue or throat, difficulty breathing. |
| Symptoms of liver injury | Pain in the upper right side of the stomach, loss of appetite, nausea, light-colored stools, dark yellow or brown urine, yellowing of the eyes or skin, unusual tiredness. |
| Common side effects that may occur and should be reported to the doctor if they persist | |
| Diarrhea | Diarrhea. Tell your doctor if this is severe or lasts for several days. |
| Fatigue | Feeling tired all the time. |
| Nausea and Vomiting | Nausea and vomiting. |
| Skin rash | Red spots or lesions on the skin. |
| Stomach pain | Abdominal pain. |
How to store medicine safely?
- Keep away from children and pets.
- Store at room temperature (between 20-25 degrees Celsius). Protect from excessive heat and direct sunlight.
- Keep the medicine in the original bottle or packet until you are ready to take it.
- Protect from moisture. Keep the bottle cap tightly closed.
- If there is a small packet inside the bottle that absorbs moisture, do not throw it away.
Take-Home Message
- Tucatinib is a targeted therapy that stops the growth of cancer cells. Take it exactly as your doctor prescribes, and at the right time.
- Be sure to tell your doctor about any other medications, vitamins, or traditional medicines you are taking.
- Avoid getting pregnant while taking the pill and for one week after stopping. Use a very reliable form of birth control.
- Seek immediate medical attention if you experience severe side effects, such as signs of liver damage (yellowing of the eyes, dark urine) or severe allergic reactions (swelling of the face, difficulty breathing).
- If you have any questions or concerns, don't be afraid to talk to your doctor. You are not alone in your treatment journey.
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