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Vectibix

Generic Name: Panitumumab (pan i TOOM yoo mab)
Brand Name: Vectibix

  • Skin problems like acne, itching, redness, rash, and dry or cracked skin are common with Vectibix (panitumumab). Very bad skin problems, infections, and tissue damage have also happened with this medicine. Sometimes these have been life-threatening or deadly. Talk to your doctor about any skin changes you may have.
  • 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.

Uses of Vectibix:

  • It is used to treat colorectal cancer.

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

  • If you have an allergy to panitumumab or any other part of Vectibix.
  • 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 a certain gene mutation (RAS) or if you do not know if you have this type of gene mutation.
  • If you are breast-feeding. Do not breast-feed while you take this medicine or for 2 months after your last dose.

This medicine may interact with other drugs or health problems.

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 Vectibix 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 Vectibix?

  • Tell all of your health care providers that you take this medicine. This includes your doctors, nurses, pharmacists, and dentists.
  • If you have upset stomach, throwing up, loose stools (diarrhea), or are not hungry, talk with your doctor. There may be ways to lower these side effects.
  • Have blood work checked as you have been told by the doctor. Talk with the doctor.
  • Have an eye exam as you have been told by your doctor.
  • Avoid sun, sunlamps, and tanning beds. Use sunscreen and wear clothing and eyewear that protects from the sun while taking Vectibix and for at least 2 months after care ends.
  • Very bad and sometimes deadly side effects have happened during the infusion. Tell your doctor if you have any bad effects during the infusion.
  • Very bad loose stools (diarrhea) and fluid loss (dehydration) have happened with this medicine when used with chemo drugs. This can lead to kidney problems or other health problems. Talk with your doctor.
  • Blood clots have happened with Vectibix. Sometimes, these blood clots have been deadly. Talk with the doctor.
  • People with a certain gene mutation (RAS) may not benefit from this medicine. Their tumor may also get worse and chance of death may be raised. Talk with the doctor.
  • If you are 65 or older, use Vectibix with care. You could have more side effects.
  • This medicine may cause fertility problems. This may affect being able to have children. Talk with the doctor.
  • This medicine may cause harm to the unborn baby if you take it while you are pregnant.
  • Use birth control that you can trust during care and for 2 months after care ends.
  • If you get pregnant while taking this medicine or within 2 months after your last dose, call your doctor right away.

How is this medicine (Vectibix) best taken?

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

  • It is given as an infusion into a vein over a period of time.

What do I do if I miss a dose?

  • Call your doctor to find out what to do.

Dosage Information (in more detail)

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 fluid and electrolyte problems like mood changes, confusion, muscle pain or weakness, a heartbeat that does not feel normal, very bad dizziness or passing out, fast heartbeat, more thirst, seizures, feeling very tired or weak, not hungry, unable to pass urine or change in the amount of urine produced, dry mouth, dry eyes, or very bad upset stomach or throwing up.
  • Fever or chills.
  • Very loose stools (diarrhea).
  • Change in eyesight, eye pain, or very bad eye irritation.
  • Chest pain or pressure.
  • Coughing up blood.
  • Mouth irritation or mouth sores.
  • Very bad belly pain.
  • Change in skin or finger nails.
  • Very bad and sometimes deadly lung problems have happened with this medicine. Call your doctor right away if you have lung or breathing problems like trouble breathing, shortness of breath, or a cough that is new or worse.

What are some other side effects of Vectibix?

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:

  • Eye irritation.
  • Feeling tired or weak.
  • Belly pain.
  • Upset stomach or throwing up.
  • Loose stools (diarrhea).
  • Eyelash growth.
  • Weight loss.
  • Not hungry.
  • Hair loss.

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 (in more detail)

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 Vectibix?

  • If you need to store Vectibix (panitumumab) at home, talk with your doctor, nurse, or pharmacist about how to store it.

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.
  • 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.
  • Some drugs may have another patient information leaflet. Check with your pharmacist. If you have any questions about this medicine, please talk with your doctor, nurse, 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 Vectibix 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 Vectibix. 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: November 1, 2017

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