Crizalk Capsule (Crizotinib): Targeted Anticancer Therapy | For ALK/ROS1-Positive Non-Small Cell Lung Cancer Management

Precautions

Crizalk Capsule contains crizotinib, a targeted medicine used for certain cancers with specific genetic changes. During treatment, taking a few important precautions can help you stay informed about possible side effects and know when to contact your healthcare professional.

Before You Start

• Share your medical history: Tell your doctor if you have liver or kidney problems, heart conditions, breathing difficulties, or vision problems.

• Review your medicines: Inform your doctor about all prescription medicines, over-the-counter products, and supplements you take, as some may interact with crizotinib.

• Discuss pregnancy or breastfeeding: Crizotinib may harm an unborn baby. Discuss suitable contraception and avoid breastfeeding during treatment as advised by your doctor.

• Plan regular check-ups: Your doctor may recommend blood tests, heart monitoring, and eye examinations during treatment.

While Using It

• Follow the prescribed dose: Take Crizalk exactly as directed. Do not change the dose or stop treatment without consulting your doctor.

• Pay attention to vision changes: Blurred vision, flashes of light, or difficulty seeing should be reported promptly.

• Monitor breathing: Contact your doctor immediately if you develop new or worsening cough, breathlessness, or difficulty breathing.

• Look after your liver: Report yellowing of the skin or eyes, dark urine, or unusual tiredness, as these may indicate a liver problem.

• Be aware of heart changes: Report dizziness, fainting, or an unusually slow or irregular heartbeat.

• Protect yourself from sunlight: Limit prolonged sun exposure and use protective clothing and sunscreen when outdoors.

• Avoid grapefruit: Do not consume grapefruit or grapefruit juice during treatment, as they may affect how the medicine works.

When to Seek Medical Help

• Breathing difficulties: Seek urgent medical attention for sudden or worsening breathing problems.

• Vision changes: Contact your doctor promptly if your vision changes or becomes significantly impaired.

• Severe symptoms: Seek immediate medical help for fainting, severe chest discomfort, or signs of a serious allergic reaction.

Note:

Crizalk Capsule requires careful medical supervision. Attend scheduled check-ups, report unusual symptoms early, and consult your treating specialist before taking any new medicine or supplement. Do not adjust your treatment on your own.

Usage

• Follow your treatment plan: Take Crizalk Capsule (Crizotinib) exactly as prescribed by your cancer specialist. Follow the instructions for your specific strength and formulation.

• Take it consistently: Follow the prescribed schedule each day. Swallow the capsule whole with water; do not crush, chew, or open it.

• Missed a dose? Follow your treatment instructions. If your next dose is due soon, or you have vomited after taking a dose, contact your healthcare team for advice rather than taking an extra dose.

• Check other medicines: Tell your doctor about all medicines, supplements, and herbal products you use, as some may affect how crizotinib works.

• Attend regular check-ups: Your healthcare team may monitor your liver function, heart rhythm, vision, and blood counts during treatment.

• Watch for changes: Report new vision problems, persistent vomiting or diarrhoea, unusual tiredness, yellowing of the skin or eyes, or changes in your heartbeat promptly.

Uses

Crizalk Capsule contains Crizotinib, a targeted anticancer medicine used for certain cancers with specific genetic changes. Whether it is appropriate depends on the cancer type and the results of relevant testing.

• Certain types of lung cancer: Used to treat eligible cases of non-small cell lung cancer (NSCLC) that have specific changes in the ALK or ROS1 genes.

• Targeted treatment: Helps block abnormal signals from certain proteins that can encourage cancer cells to grow.

• Treatment based on test results: Genetic testing helps determine whether a person's cancer may respond to crizotinib.

• Specialist-guided care: The treatment plan depends on the diagnosis, previous treatments, and individual response.

Note: Take Crizalk only under the supervision of a qualified cancer specialist. Do not change or stop treatment without medical advice. Seek urgent medical attention for severe breathing difficulties, fainting, a rapid or irregular heartbeat, or sudden changes in vision.

Conclusion

Crizalk offers a targeted treatment option for certain cancers with specific genetic changes. Regular monitoring and following your specialist's instructions are important parts of treatment.

Side Effects

Crizalk Capsule contains crizotinib, a targeted medicine used to treat certain types of cancer based on specific genetic changes. Like any prescription medicine, it may cause side effects, although not everyone experiences them. The effects can vary from person to person, so paying attention to how you feel during treatment is important.

Common Side Effects

• Nausea: You may feel queasy or experience an unsettled stomach.

• Diarrhoea: Your bowel movements may become more frequent or loose.

• Vision changes: You may notice flashes of light, blurred vision, floaters, or difficulty adjusting to changes in lighting.

• Swelling: Your hands, feet, or ankles may appear slightly swollen.

• Fatigue: You may feel more tired or have less energy than usual.

• Reduced appetite: You may not feel as hungry as you normally do.

• Changes in taste: Some foods may taste different during treatment.

• Constipation: You may find it harder than usual to pass stools.

Serious Side Effects

• Liver problems: Yellowing of the skin or eyes, dark urine, or unusual tiredness needs prompt medical attention.

• Heart rhythm changes: A fast or irregular heartbeat, dizziness, or fainting should be assessed urgently.

• Lung problems: New or worsening breathlessness, cough, or fever requires immediate medical assessment.

• Vision difficulties: Sudden or significant changes in vision should not be ignored.

• Severe stomach discomfort: Persistent or intense abdominal pain, especially with vomiting, needs prompt medical attention.

• Severe allergic reactions: Swelling of the face or throat, or difficulty breathing, requires emergency care.

A Helpful Tip: Keep track of any new symptoms and let your healthcare team know about them, even if they seem mild. Early communication can help your doctor decide whether you need additional monitoring or changes to your treatment.

Note: Take Crizalk Capsule only as prescribed by your specialist. Attend recommended blood tests and other monitoring appointments, and tell your healthcare team about all medicines and supplements you use. Avoid driving if your vision is affected. Do not change or stop your treatment without medical advice. Seek urgent medical attention for breathing difficulties, fainting, or sudden significant vision changes.

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FAQs

1. What is Crizalk Capsule (Crizotinib) used for?

Crizalk Capsule contains crizotinib, a targeted medicine used to treat certain types of cancer that have specific genetic changes. It works only for conditions where these changes make the medicine suitable.

2. How does Crizalk Capsule work in the body?

Crizotinib blocks certain proteins, including ALK and ROS1, that can encourage abnormal cells to grow. By targeting these proteins, it helps slow or stop the growth of affected cells.

3. How should Crizalk Capsule be taken?

Take Crizalk Capsule exactly as prescribed by your specialist. Swallow the capsule whole with water, and do not open, crush, or chew it.

4. What are the common side effects of Crizalk Capsule?

Some people may experience nausea, diarrhoea, vomiting, constipation, changes in taste, swelling, or tiredness. Let your healthcare team know if these effects persist or interfere with daily activities.

5. How long does Crizalk Capsule take to show results?

The response varies from person to person. Your specialist will monitor your progress through regular check-ups and appropriate tests to determine how well the treatment is working.

6. Can Crizalk Capsule be taken with food?

Crizotinib can generally be taken with or without food. Try to take it consistently as directed by your specialist, and follow any specific instructions provided with your medicine.

7. What precautions should I follow while taking Crizalk Capsule?

Attend scheduled appointments and inform your specialist about any existing heart, liver, or vision problems. Report new vision changes, yellowing of the skin or eyes, or an unusual heartbeat promptly.

8. Can Crizalk Capsule interact with other medicines?

Yes. Certain antibiotics, antifungal medicines, seizure medicines, and herbal products such as St. John's wort may affect crizotinib levels or increase side effects. Share a complete list of your medicines and supplements with your specialist.

9. What should I do if I miss a dose of Crizalk Capsule?

If you remember more than 6 hours before your next scheduled dose, take the missed dose when you remember. If fewer than 6 hours remain, skip it and take the next dose at the usual time. Never take two doses together to make up for a missed dose.

10. How should Crizalk Capsule be stored?

Keep Crizalk Capsule in its original packaging at room temperature, away from excessive heat, moisture, and direct sunlight. Store it safely out of the reach of children and follow the storage instructions on the pack.

Interactions

Significant Drug Interactions That Require Attention for Crizalk Capsule (Crizotinib)

Crizalk Capsule contains crizotinib, a medicine used to treat certain types of cancer. It can interact with other medicines, potentially changing how crizotinib works or increasing the risk of side effects. Your healthcare professional should review your current medicines before and during treatment.

• Strong CYP3A Inhibitors: Medicines such as ketoconazole and clarithromycin may increase crizotinib levels in the body, potentially raising the risk of side effects.

• CYP3A Inducers: Medicines such as rifampicin and carbamazepine may lower crizotinib levels and reduce its effectiveness.

• Medicines That Affect Heart Rhythm: Certain antibiotics, antifungals, and other medicines that prolong the QT interval may increase the risk of abnormal heart rhythms when combined with crizotinib.

• Medicines That Can Cause Liver Problems: Some medicines may increase the risk of liver-related side effects, so your healthcare professional may need to monitor your liver function.

• Other Prescription and Herbal Products: Over-the-counter medicines, supplements, and herbal products may also affect treatment or interact with crizotinib.

Note: Tell your healthcare professional about all medicines and supplements you take before starting Crizalk. Do not start, stop, or change any medicine without medical advice. Attend recommended appointments and monitoring tests to help manage potential interactions safely.