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Vemurafenib

Generic Name: Vemurafenib (vem ue RAF e nib)
Brand Name: Zelboraf

Uses of Vemurafenib:

  • It is used to treat a type of skin cancer (melanoma).

What do I need to tell my doctor BEFORE I take Vemurafenib?

  • If you have an allergy to vemurafenib or any other part of vemurafenib.
  • If you are allergic to any drugs like this one, any other drugs, foods, or other substances. Tell your doctor about the allergy and what signs you had, like rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other signs.
  • If you have any of these health problems: Low calcium levels, low magnesium levels, or low potassium levels.
  • If you have a long QT on ECG.
  • If you are taking any drugs that can cause a certain type of heartbeat that is not normal (prolonged QT interval). There are many drugs that can do this. Ask your doctor or pharmacist if you are not sure.
  • If you take any drugs (prescription or OTC, natural products, vitamins) that must not be taken with this medicine, like certain drugs that are used for HIV, infections, or seizures. There are many drugs that must not be taken with vemurafenib.
  • If you are breast-feeding. Do not breast-feed while you take this medicine and for 2 weeks after your last dose.

This is not a list of all drugs or health problems that interact with vemurafenib.

Tell your doctor and pharmacist about all of your drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for you to take this medicine with all of your drugs and health problems. Do not start, stop, or change the dose of any drug without checking with your doctor.

What are some things I need to know or do while I take Vemurafenib?

  • Tell all of your health care providers that you take vemurafenib. This includes your doctors, nurses, pharmacists, and dentists.
  • Have blood work checked as you have been told by the doctor. Talk with the doctor.
  • This medicine may add to the chance of getting some types of cancer. Talk with the doctor.
  • You will need to have a skin exam before you start this medicine and every 2 months while you take it. You will also need to do monthly skin checks as told by your doctor.
  • You may get sunburned more easily. Avoid sun, sunlamps, and tanning beds. Use sunscreen and wear clothing and eyewear that protects you from the sun.
  • Bright lights may bother you. Wear sunglasses.
  • This medicine may cause a type of abnormal heartbeat (prolonged QT interval). If this happens, the chance of other unsafe and sometimes deadly abnormal heartbeats may be raised. Talk with the doctor.
  • You will need an ECG before starting vemurafenib and during treatment. Talk with your doctor.
  • If you have had or will be having radiation treatment, talk with your doctor. Worse side effects from radiation treatment have happened with this medicine. Sometimes this has been deadly.
  • This medicine may affect how much of some other drugs are in your body. If you are taking other drugs, talk with your doctor. You may need to have your blood work checked more closely while taking vemurafenib with your other drugs.
  • A very bad and sometimes deadly reaction has happened with this medicine. Most of the time, this reaction has signs like fever, rash, or swollen glands with problems in body organs like the liver, kidney, blood, heart, muscles and joints, or lungs. Talk with the doctor.
  • Bending of the fingers inward has happened with vemurafenib. Sometimes, this could be very bad or disabling. Call your doctor right away if this happens to you.
  • If you are 65 or older, use this medicine with care. You could have more side effects.
  • This medicine may cause harm to the unborn baby if you take it while you are pregnant.
  • Use birth control that you can trust to prevent pregnancy while taking vemurafenib and for at least 2 weeks after stopping the drug.
  • If you get pregnant while taking this medicine or within 2 weeks after your last dose, call your doctor right away.

How is this medicine (Vemurafenib) best taken?

Use vemurafenib as ordered by your doctor. Read all information given to you. Follow all instructions closely.

  • Take with or without food.
  • Swallow whole. Do not chew or crush.
  • Take with a full glass of water.
  • If you throw up after taking a dose, do not repeat the dose. Take your next dose at your normal time.
  • To gain the most benefit, do not miss doses.
  • Keep taking this medicine as you have been told by your doctor or other health care provider, even if you feel well.

What do I do if I miss a dose?

  • Take a missed dose as soon as you think about it.
  • If the next dose is less than 4 hours away, skip the missed dose and go back to your normal time.
  • Do not take 2 doses at the same time or extra doses.

Dosage Information (comprehensive)

What are some side effects that I need to call my doctor about right away?

WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:

  • Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
  • Signs of liver problems like dark urine, feeling tired, not hungry, upset stomach or stomach pain, light-colored stools, throwing up, or yellow skin or eyes.
  • Signs of kidney problems like unable to pass urine, change in how much urine is passed, blood in the urine, or a big weight gain.
  • Dizziness or passing out.
  • A fast heartbeat.
  • A heartbeat that does not feel normal.
  • Swelling in the arms or legs.
  • A skin lump or growth.
  • Redness, irritation, pain, or thick skin on the palms of the hands or soles of the feet.
  • Change in eyesight, eye pain, or very bad eye irritation.
  • Have your skin checked. Tell your doctor if you have any skin changes like a new wart, skin sore or reddish bump that bleeds or does not heal, or a change in the color or size of a mole.
  • A very bad skin reaction (Stevens-Johnson syndrome/toxic epidermal necrolysis) may happen. It can cause very bad health problems that may not go away, and sometimes death. Get medical help right away if you have signs like red, swollen, blistered, or peeling skin (with or without fever); red or irritated eyes; or sores in your mouth, throat, nose, or eyes.

What are some other side effects of Vemurafenib?

All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if any of these side effects or any other side effects bother you or do not go away:

  • Hair loss.
  • Muscle or joint pain.
  • Back pain.
  • Itching.
  • Headache.
  • Upset stomach or throwing up.
  • Loose stools (diarrhea).
  • Hard stools (constipation).
  • Change in taste.
  • Feeling tired or weak.
  • Not hungry.
  • Cough.
  • Dry skin.

These are not all of the side effects that may occur. If you have questions about side effects, call your doctor. Call your doctor for medical advice about side effects.

You may report side effects to the FDA at 1-800-FDA-1088. You may also report side effects at http://www.fda.gov/medwatch.

Side Effects (complete list)

If OVERDOSE is suspected:

If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.

How do I store and/or throw out Vemurafenib?

  • Store in the original container at room temperature.
  • Keep lid tightly closed.
  • Store in a dry place. Do not store in a bathroom.
  • Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets.
  • Check with your pharmacist about how to throw out unused drugs.

Consumer Information Use and Disclaimer

  • If your symptoms or health problems do not get better or if they become worse, call your doctor.
  • Do not share your drugs with others and do not take anyone else's drugs.
  • Keep a list of all your drugs (prescription, natural products, vitamins, OTC) with you. Give this list to your doctor.
  • Talk with the doctor before starting any new drug, including prescription or OTC, natural products, or vitamins.
  • This medicine comes with an extra patient fact sheet called a Medication Guide. Read it with care. Read it again each time vemurafenib is refilled. If you have any questions about this medicine, please talk with the doctor, pharmacist, or other health care provider.
  • If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.

This information should not be used to decide whether or not to take vemurafenib or any other medicine. Only the healthcare provider has the knowledge and training to decide which medicines are right for a specific patient. This information does not endorse any medicine as safe, effective, or approved for treating any patient or health condition. This is only a brief summary of general information about this medicine. It does NOT include all information about the possible uses, directions, warnings, precautions, interactions, adverse effects, or risks that may apply to vemurafenib. This information is not specific medical advice and does not replace information you receive from the healthcare provider. You must talk with the healthcare provider for complete information about the risks and benefits of using this medicine.

Review Date: December 6, 2017

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