WARNING

Vandetanib is a medication primarily used in the treatment of advanced medullary thyroid cancer. Like any medication, it comes with potential risks and side effects. Here’s a brief overview, but it’s important to note that this information may not be exhaustive, and individual responses to the medication can vary:

• Cardiovascular Effects: Vandetanib has been associated with an increased risk of QT interval prolongation, which can lead to an irregular heart rhythm (torsades de pointes). This can be serious and may result in fainting or more severe cardiac events.
• Hypertension: Vandetanib can cause high blood pressure. Blood pressure should be monitored regularly during treatment, and antihypertensive medications may be necessary to manage this side effect.
• Diarrhea: Diarrhea is a common side effect of vandetanib. It’s important to stay well-hydrated and notify your healthcare provider if it becomes severe or persistent.
• Skin Reactions: Skin-related side effects, such as rash and photosensitivity (increased sensitivity to sunlight), have been reported with vandetanib use.
• Thyroid Function: Vandetanib can affect thyroid function, leading to hypothyroidism (underactive thyroid). Regular monitoring of thyroid function is typically recommended during treatment.
• Respiratory Events: Interstitial lung disease (ILD) has been reported with vandetanib, although it is rare. Symptoms may include difficulty breathing, cough, and fever.
• Liver Enzyme Elevations: Vandetanib may cause elevated liver enzymes, indicating potential liver toxicity. Regular liver function tests are usually performed during treatment.

It’s crucial for individuals taking vandetanib to communicate openly with their healthcare providers about any side effects or concerns. The benefits and risks of the medication should be carefully weighed, and close monitoring is often required during treatment. This information is not a substitute for professional medical advice, so individuals considering or undergoing vandetanib treatment should consult their healthcare providers for personalized guidance based on their health status and medical history.

Why is this medication prescribed?

Vandetanib is prescribed primarily for the treatment of certain types of thyroid cancer. Specifically, it is indicated for:

• Medullary Thyroid Cancer (MTC): Vandetanib is approved for the treatment of unresectable locally advanced or metastatic medullary thyroid cancer.
• HER2-Negative Metastatic Breast Cancer: In some cases, Vandetanib may be used in combination with other medications for the treatment of HER2-negative metastatic breast cancer.

Vandetanib is a tyrosine kinase inhibitor that works by blocking certain proteins involved in the growth and spread of cancer cells, particularly those associated with the development of blood vessels that supply tumors (angiogenesis) and receptors that stimulate the growth of cancer cells.

How should this medicine be used?

Here’s some information on how Vandazole is typically used:

• Dosage: The recommended dose of Vandetanib can vary, and it is important for patients to follow their healthcare provider’s prescription. Dosage may be adjusted based on individual patient characteristics and response to treatment.
• Administration: Vandetanib is typically taken orally, with or without food. It is usually taken once daily.
• Monitoring: Patients taking Vandetanib will undergo regular monitoring, including blood pressure checks, heart rate assessments, and thyroid function tests. Regular medical follow-ups are essential to manage potential side effects and assess the treatment’s effectiveness.
• Adherence: It’s crucial for individuals to take Vandetanib exactly as prescribed by their healthcare provider. Missing doses or altering the prescribed dosage without consulting a healthcare professional should be avoided.
• Side Effect Management: Patients should promptly report any side effects or concerns to their healthcare provider. Side effects, such as diarrhea, skin rash, high blood pressure, or other symptoms, may require management to ensure the patient’s well-being.

It’s important to note that Vandetanib should only be used under the supervision of a qualified healthcare professional, and treatment decisions should be made based on individual patient characteristics, the type and stage of cancer, and other relevant factors. Patients should discuss any questions or concerns about Vandetanib with their healthcare provider.

Other uses for this medicine

Vandetanib is primarily approved for the treatment of medullary thyroid cancer, and its use in other conditions is generally limited. However, there have been instances where Vandetanib has been investigated or used off-label for other purposes, such as in combination therapies for certain types of metastatic breast cancer. Any use of Vandetanib beyond its approved indications should be discussed thoroughly with a healthcare professional, and decisions should be based on careful consideration of potential risks and benefits.

What special precautions should I follow?

Special precautions to be aware of when taking Vandetanib include:

• QT Prolongation: Vandetanib can cause QT prolongation, which is an alteration in the electrical activity of the heart. This may lead to irregular heartbeats. Patients with a history of or predisposition to QT prolongation, as well as those taking medications known to prolong the QT interval, should be closely monitored.
• Hypertension: Vandetanib can cause an increase in blood pressure. Blood pressure should be monitored regularly, and antihypertensive medications may be required to manage hypertension.
• Thyroid Dysfunction: Vandetanib affects thyroid function. Thyroid function tests should be conducted regularly, and thyroid replacement therapy may be needed in some cases.
• Interstitial Lung Disease (ILD): Serious lung problems, including ILD, have been reported in some patients taking Vandetanib. Patients should be monitored for respiratory symptoms, and treatment may need to be interrupted or discontinued if ILD is suspected.
• Hemorrhage: Vandetanib may increase the risk of bleeding. Caution is advised in patients with a history of bleeding disorders or those taking anticoagulants.
• Wound Healing: Vandetanib may impair wound healing. Patients should inform their healthcare provider about planned surgical procedures, and temporary interruption of treatment may be necessary around the time of surgery.
• Pregnancy and Breastfeeding: Vandetanib can harm the developing fetus, and women of reproductive age should use effective contraception during treatment. It is not recommended during pregnancy or breastfeeding.
• Liver Function: Liver function should be monitored, and dose adjustments may be necessary in patients with impaired liver function.

As always, patients should communicate openly with their healthcare provider about their medical history, ongoing medications, and any concerns or side effects experienced during Vandetanib treatment. Adherence to the prescribed treatment plan and regular follow-up appointments are essential for the safe and effective use of Vandetanib.

What special dietary instructions should I follow?

There are generally no specific dietary restrictions associated with Vandetanib. However, it’s crucial to maintain a healthy and well-balanced diet to support overall well-being during cancer treatment. Patients should discuss their dietary concerns or any potential interactions with their healthcare provider or a registered dietitian.

What should I do if I forget a dose?

If you forget to take a dose of Vandetanib, you should follow the specific instructions provided by your healthcare provider or the medication’s prescribing information. In general:

• Take the missed dose as soon as you remember, unless it is almost time for your next scheduled dose.
• Do not take a double dose to make up for the missed one.
• If you are unsure about what to do, contact your healthcare provider for guidance.

What side effects can this medication cause?

Vandetanib, like many medications, can cause side effects. It’s important to note that not everyone will experience these side effects, and their severity can vary from person to person. Common and serious side effects associated with Vandetanib include:

Common Side Effects:

• Diarrhea: Diarrhea is a frequent side effect and may require management to prevent dehydration.
• Rash: Some individuals may experience skin rash.
• Nausea and Vomiting: Gastrointestinal symptoms, including nausea and vomiting, may occur.
• High Blood Pressure (Hypertension): Vandetanib can cause an increase in blood pressure, and regular monitoring is essential.
• Headache: Headaches are a reported side effect.
• Fatigue: Tiredness and weakness can occur.
• Abdominal Pain: Some individuals may experience abdominal pain.
• Decreased Appetite: A decrease in appetite may occur.

Serious Side Effects:

• QT Prolongation: Vandetanib may affect the electrical activity of the heart, leading to a potentially serious condition called QT prolongation. This can increase the risk of irregular heartbeats.
• Thyroid Dysfunction: Since Vandetanib is used in thyroid cancer, it can affect thyroid function. Thyroid function should be monitored regularly.
• Interstitial Lung Disease (ILD): Rare but serious lung problems, including ILD, have been reported in some patients taking Vandetanib.
• Hemorrhage: Increased risk of bleeding, including gastrointestinal bleeding, has been observed.
• Hypertensive Crisis: Severe hypertension can occur in some individuals, and blood pressure should be carefully monitored.
• Wound Healing Complications: Vandetanib may impair wound healing. Patients should inform their healthcare provider about planned surgical procedures.
• Gastrointestinal Perforation: This is a rare but serious side effect that may occur.
• Hand-Foot Syndrome: Skin reactions on the palms of the hands and soles of the feet may occur.

It’s important for individuals taking Vandetanib to communicate openly with their healthcare provider about any side effects or concerns. The decision to use Vandetanib should be based on a careful consideration of the potential benefits and risks, and patients should receive regular medical monitoring during treatment. Always follow your healthcare provider’s recommendations and report any unusual symptoms promptly.

What should I know about storage and disposal of this medication?

Storage and Disposal of Vandetanib:

• Storage:
  • Store Vandetanib at room temperature, away from excess heat and moisture.
  • Keep it in its original container, and protect it from light.
  • Do not store Vandetanib in the bathroom.
• Disposal:
  • Dispose of Vandetanib according to local regulations or guidelines.
  • Do not flush medications down the toilet or pour them into a drain unless instructed to do so.
  • Consult with your healthcare provider or pharmacist on proper disposal methods, such as using a medication take-back program or a drug disposal pouch.

In case of emergency/overdose

In case of an overdose or emergency, contact your local emergency services or go to the nearest emergency room immediately. Symptoms of overdose with Vandetanib may include severe diarrhea, severe skin rash, and other adverse reactions. It’s essential to seek prompt medical attention.

What other information should I know?

• Follow Healthcare Provider’s Instructions: Take Vandetanib exactly as prescribed by your healthcare provider. Do not alter the dosage or stop taking the medication without consulting your healthcare provider.
• Regular Monitoring: Attend all scheduled appointments for blood pressure monitoring, heart rate assessments, thyroid function tests, and other evaluations as recommended by your healthcare provider.
• Inform Healthcare Provider: Keep your healthcare provider informed about any side effects, changes in your health, or new medications you may be taking.
• Pregnancy and Contraception: Vandetanib can harm the developing fetus, and effective contraception is crucial for women of reproductive age during treatment. If you become pregnant while taking Vandetanib, notify your healthcare provider immediately.
• Potential Interactions: Inform your healthcare provider about all medications, including over-the-counter drugs, supplements, and herbal products, that you are taking, as Vandetanib may interact with certain substances.
• Avoid Grapefruit: Grapefruit and grapefruit juice may interact with Vandetanib. Discuss the consumption of grapefruit products with your healthcare provider.
• Wound Healing: Inform your healthcare provider about any planned surgical procedures, as Vandetanib may impair wound healing.
• Dietary Considerations: Maintain a healthy and well-balanced diet, and discuss any dietary concerns with your healthcare provider or a registered dietitian.

Always consult with your healthcare provider or pharmacist for specific instructions and guidance related to Vandetanib. They can provide personalized advice based on your medical history and the specific details of your treatment plan.