Zelboraf can have side effects. Not all side effects reported for Zelboraf are included in this leaflet. Should your general health worsen or if you experience any untoward effects while taking Zelboraf, please consult your health care provider for advice. If any of the following happens, stop taking Zelboraf and tell your doctor immediately or go to the casualty department at your nearest hospital:
Serious allergic reactions
If you get any of these:
- Swelling of the face, lips or tongue
- Difficulty in breathing
- Rash
- Fainting sensation
Call a doctor or pharmacist immediately. Do not use any more Zelboraf until you have spoken to a doctor or pharmacist. Please talk to your doctor as soon as possible if you notice any changes in your skin. Worsening of radiation treatment side effects can occur in patients who are treated with radiation before, during, or after Zelboraf treatment. This can occur on the area that was treated with radiation, such as the skin, oesophagus, bladder, liver, rectum, and lungs. Tell your doctor immediately or go to the casualty department at your nearest hospital if you experience any of the following symptoms:
- Skin rash, blistering, peeling or discoloration of the skin
- Shortness of breath, which may be accompanied by a cough, fever or chills (pneumonitis)
- Difficulty or pain when swallowing, chest pain, heartburn or acid reflux (oesophagitis).
Please talk to your doctor and pharmacist as soon as possible if you notice any changes in your skin. These are all serious side effects. You may need urgent medical attention.
Side effects are listed below by frequency:
Very frequent side effects (may affect more than 1 in 10 people):
- Rash, itching, dry or scaly skin
- Skin problems including warts
- A type of skin cancer (cutaneous squamous cell carcinoma)
- Sunburn, being more sensitive to sunlight
- Headache
- Loss of appetite
- Changes in the way things taste
- Diarrhoea
- Constipation
- Feeling sick (nausea), vomiting
- Hair loss
- Joint or muscle pain, musculoskeletal pain
- Pain in the extremities
- Back pain
- Feeling tired (fatigue)
- Fever
- Swelling usually in the legs (peripheral oedema)
- Change in liver tests results
- Cough
Frequent side effects (may affect up to 1 in 10 people):
- A type of skin cancer (basal cell carcinoma)
- Palmar plantar syndrome (i.e. redness, skin peeling or blisters on hands and feet)
- Inflammation of the eye (uveitis)
- Bell's palsy (a form of facial paralysis)
- Tingling or burning feelings in hands and feet
- Inflammation of joints
- Inflammation of hair’s roots
- Weight loss
- Problem with the nerves that can produce pain, loss of sensation and/or muscle weakness (peripheral neuropathy)
- Inflammation of blood vessels
- Cases of Dupuytren’s contracture (condition that causes tough tissue to form under the skin of the palm and fingers curl causing deformities of the hand) and plantar fascial fibromatosis (thickening of the deep tissue under the feet).
- Change in liver tests results (ALT, alkaline phosphatase and bilirubin increase)
- Changes in electrical activity of the heart (QT prolongation)
Less frequent (may affect up to 1 in 100 people):
- Allergic reactions that may include swelling of the face and difficulty breathing
- Blockage of blood flow to part of the eye (retinal vein occlusion)
- Inflammation of the pancreas
- Change in liver laboratory tests results or liver injury, including severe liver injury where liver is injured to the extent that it is not able to fully perform its function
- A type of cancer (non-cutaneous squamous cell carcinoma)
- Thickening of deep tissues underneath the sole of the feet that may be disabling if severe
Rare (may affect up to 1 in 1 000 people)
- Progression of a type of pre-existing cancers with RAS mutations (Chronic Myelomonocytic Leukaemia, Pancreatic adenocarcinoma)
- A type of severe skin reaction characterised by rash accompanied by fever and inflammation of internal organs such as liver and kidney
- Inflammatory disease mainly affecting the skin, lung and eye (sarcoidosis)
- Types of kidney injury characterised by inflammation (acute interstitial nephritis) or damage to the tubules of the kidney (acute tubular necrosis).
If you notice any side effects not mentioned in this leaflet, please inform your doctor or pharmacist.
Reporting of side effects
If you get side effects, talk to your doctor, pharmacist or nurse. You can also report side effects to SAHPRA via the “6.04 Adverse Drug Reaction Reporting Form”, found online under SAHPRA’s publications: https://www.sahpra.org.za/Publications/Index/8. By reporting side effects, you can help provide more information on the safety of Zelboraf.