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(panitumumab) Injection



Dermatologic toxicities occurred in 90% of patients and were severe (NCI-CTC grade 3 and higher) in 15% of patients receiving Vectibix monotherapy [see DOSAGE AND ADMINISTRATION, WARNINGS AND PRECAUTIONS, and ADVERSE REACTIONS].


Vectibix (panitumumab) is a recombinant, human IgG2 kappa monoclonal antibody that binds specifically to the human epidermal growth factor receptor (EGFR). Panitumumab has an approximate molecular weight of 147 kDa. Panitumumab is produced in genetically engineered mammalian (Chinese hamster ovary) cells.

Vectibix is a sterile, colorless, pH 5.6 to 6.0 liquid for intravenous (IV) infusion, which may contain a small amount of visible translucent-to-white, amorphous, proteinaceous, panitumumab particulates. Each single-use 5 mL vial contains 100 mg of panitumumab, 29 mg sodium chloride, 34 mg sodium acetate, and Water for Injection, USP. Each single-use 10 mL vial contains 200 mg of panitumumab, 58 mg sodium chloride, 68 mg sodium acetate, and Water for Injection, USP. Each single-use 20 mL vial contains 400 mg of panitumumab, 117 mg sodium chloride, 136 mg sodium acetate, and Water for Injection, USP.

What are the possible side effects of panitumumab (Vectibix)?

Some people receiving a panitumumab injection have had a reaction to the infusion (when the medicine is injected into the vein). Tell your caregiver right away if you feel dizzy, nauseated, light-headed, sweaty, itchy, or have a fever, chills, or trouble breathing during the injection.

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Some of the side effects of panitumumab may not appear when you first start using the medication. Severe skin or eye reactions may...

Read All Potential Side Effects and See Pictures of Vectibix »

What are the precautions when taking panitumumab injection for intravenous use (Vectibix)?

Before receiving panitumumab, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

Before using this medication, tell your doctor or pharmacist your medical history, especially of: lung disease (e.g., pulmonary fibrosis, interstitial pneumonitis), low magnesium/calcium blood levels.

Sunlight may worsen any skin reactions that may occur while you are receiving this drug. Avoid prolonged sun exposure, tanning booths, and sunlamps. Use a sunscreen and wear protective clothing when outdoors.

This medication is not recommended for use during pregnancy. It may harm an unborn baby. If you...

Read All Potential Precautions of Vectibix »

Last reviewed on RxList: 6/9/2014
This monograph has been modified to include the generic and brand name in many instances.

Vectibix - User Reviews

Vectibix User Reviews

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Here is a collection of user reviews for the medication Vectibix sorted by most helpful. Patient Discussions FAQs

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