Dr. Arjun Srivastav
What Is Crizalk 250 mg?
Crizalk 250 mg contains crizotinib, a medicine that acts on particular proteins involved in cell signalling. It is mainly used when testing shows that a person’s cancer has certain molecular changes that can be targeted by crizotinib.
For NSCLC, these include ALK-positive and ROS1-positive disease. Crizotinib is also used for certain other ALK-positive cancers in specific patient groups.
The 250 mg capsule is taken by mouth. The exact treatment plan can vary according to the diagnosis, previous treatment, other anti-cancer medicines and how the person responds to therapy.
Quick Information
| Product information | Details |
|---|---|
| Brand name | Crizalk |
| Active ingredient | Crizotinib |
| Strength | 250 mg |
| Dosage form | Oral Capsule |
| Medicine class | Tyrosine kinase inhibitor |
| Main molecular targets | ALK and ROS1 |
| Manufacturer | Boehringer Ingelheim India Pvt. Ltd. |
Crizalk 250 mg Uses
Crizalk 250 mg is used for certain types of non-small cell lung cancer (NSCLC) in which specific molecular changes are identified. Its use may depend on whether the cancer has an ALK or ROS1 alteration, as well as the individual treatment plan.
Non-small cell lung cancer
Crizalk 250 is used for certain cases of non-small cell lung cancer, particularly when testing identifies an ALK or ROS1 alteration. These molecular findings help determine whether crizotinib is an appropriate treatment option.
ALK-positive NSCLC
ALK-positive NSCLC has an alteration involving the anaplastic lymphoma kinase gene. Crizotinib can be used when this alteration is present and the medicine is considered suitable for the individual’s treatment plan.
ROS1-positive NSCLC
Crizotinib is also used for NSCLC associated with a ROS1 alteration. Because the medicine is directed toward a particular molecular target, confirmation of ROS1 status is important before treatment is started.
How Does Crizalk 250 mg Work?
Crizalk contains crizotinib, which blocks certain kinase proteins involved in signalling within cells. Its activity includes targets such as ALK and ROS1.
When these pathways are involved in abnormal cell growth, blocking their signalling can interfere with processes that support the cancer cells. This is why molecular testing plays an important role in deciding whether crizotinib is suitable.
Crizalk 250 mg → Crizotinib → ALK/ROS1 signalling is blocked → abnormal growth signalling is reduced💡 Simple pathway:
Crizalk 250 mg Side Effects
Not everyone experiences the same effects during treatment. Some reactions are relatively common and may settle or remain manageable, while others require prompt medical attention.
😊 Common Side Effects
🚨 Serious Side Effects
😊 Common Side Effects
🚨 Serious Side Effects
Crizalk 250 mg Dosage
The usual adult dose for metastatic ALK-positive or ROS1-positive non-small cell lung cancer is 250 mg twice daily. Depending on factors such as treatment response, side effects, or certain liver and kidney conditions, the prescribing doctor may reduce the dose or temporarily interrupt treatment.
The prescribed dose should be followed rather than adjusted independently.
How to Take Crizalk 250
- Take Crizalk by mouth at the times advised by your doctor.
- Take the capsule with or without food.
- Swallow the capsule whole with water.
- Do not crush, chew, open or dissolve the capsule.
- Try to take each dose at about the same time every day.
- If you vomit after taking a dose, do not take another capsule to replace it. Take your next dose at the usual time.
Continue taking Crizalk according to your prescribed treatment schedule, even if you are feeling well.
Missed Dose
If you forget a dose, take it when you remember unless the next scheduled dose is less than 6 hours away. If it is within 6 hours, skip the missed dose and take the next one at the usual time. Do not take two doses together to make up for a missed capsule.
Overdose
Taking more Crizalk than prescribed requires prompt medical advice. If you accidentally take too many capsules, contact your doctor, pharmacist or an appropriate urgent medical service for advice rather than taking any further doses on your own.
Crizalk 250 mg Safety Advice
Grapefruit
Avoid grapefruit and grapefruit juice during treatment because they can affect crizotinib exposure.
Sun exposure
Crizotinib may cause photosensitivity. Limiting prolonged sun exposure and using suitable protection can help reduce this risk.
Regular monitoring
Attend scheduled appointments and tests so your treatment team can check how you are responding and whether any dose adjustment is needed.
Pregnancy and Breastfeeding
Tell your doctor if you are pregnant, planning a pregnancy, becoming pregnant, or breastfeeding while taking Crizalk.
Crizalk 250 mg Precautions
Before starting treatment, the treating team should know about existing medical conditions and all medicines being taken. Particular care may be needed if you have:
- Liver problems
- Reduced kidney function
- A history of heart rhythm problems
- Existing vision problems
- Previous lungs condition
- Other conditions requiring regular medication
Your healthcare team may arrange tests during treatment to monitor areas such as liver function and other parameters relevant to your treatment. Dose changes or temporary treatment interruptions may be considered when clinically necessary.
Drug Interactions
| Medicine or substance | Possible interaction |
|---|---|
| Strong CYP3A inhibitors | May increase crizotinib levels in the body. |
| Strong CYP3A inducers | May reduce crizotinib levels and affect its exposure. |
| Medicines affected by CYP3A | Crizotinib may alter the levels of some medicines processed through this pathway. |
| Medicines that affect heart rhythm | Some combinations may increase the risk of heart rhythm changes. |
| Grapefruit and grapefruit juice | May increase crizotinib exposure and should be avoided during treatment. |
Tell your doctor or pharmacist about all prescription medicines, vitamins, over-the-counter supplements, and herbal products you use before starting Crizalk 250mg.
Crizalk 250 mg Storage and Disposal
- Store Crizalk 250 at room temperature, away from excessive heat and moisture.
- Keep the tablets in their original packaging until you are ready to take them.
- Keep the medicine out of the reach and sight of children.
- Do not use Crizalk after the expiry date printed on the package.
- Do not throw unused or expired tablets into the toilet or household waste; ask a pharmacist about the appropriate disposal method in your area.
Using Crizalk 250mg as directed can help patients follow their prescribed treatment plan with greater confidence. Keep your healthcare professional informed about any new symptoms or other medicines you are taking. For product information and purchasing support, AustraliaRxMeds provides details about Crizalk 250 mg price and substitutes.
FAQs
1. What is Crizalk 250 mg used to treat?
This medication contains crizotinib and is used for certain types of non-small cell lung cancer (NSCLC), particularly when the cancer has specific ALK or ROS1 alterations.
2. What are the common side effects of taking Crizalk?
Commonly reported effects include vision changes, nausea, diarrhoea, constipation, vomiting, tiredness, reduced appetite and swelling. The effects can differ from one person to another.
3. How much does Crizalk 250 mg cost?
The price can vary depending on the source, prescription arrangements and whether PBS subsidy criteria apply. The PBS currently lists a 60-capsule pack of crizotinib 250 mg with a general patient charge of $25 under the applicable listing.
4. How long can you stay on Crizalk 250mg?
There is no fixed treatment length that applies to everyone. Crizotinib may be continued while the treatment remains appropriate, with the treating team assessing factors such as disease progression, response and tolerability.
5. Can Crizalk 250 mg be taken with food?
Yes. Crizalk can generally be taken with or without food. The capsule should be swallowed whole with water and taken around the same time each day. Grapefruit and grapefruit juice should be avoided during treatment.
6. What should I do if I miss a dose of Crizalk 250?
Take the missed dose when you remember unless the next dose is due within 6 hours. If it is less than 6 hours until the next dose, skip the missed capsule and continue with the regular schedule. Do not take two doses together to make up for a missed dose.
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