What should I tell my care team before I take this medication?
They need to know if you have any of these conditions:
- Eye disease, vision problems
- Heart disease
- History of irregular heartbeat
- History of low levels of calcium, magnesium, or potassium in the blood
- Kidney disease
- Liver disease
- Recent or ongoing radiation therapy
- An unusual or allergic reaction to vemurafenib, other medications, foods, dyes, or preservatives
- Pregnant or trying to get pregnant
- Breast-feeding
What may interact with this medication?
Do not take this medication with any of the following:
- Cisapride
- Dronedarone
- Fluconazole
- Pimozide
- Posaconazole
- Saquinavir
- Thioridazine
This medication may also interact with the following:
- Antiviral medications for HIV or AIDS
- Caffeine
- Certain antibiotics, such as clarithromycin, erythromycin, telithromycin
- Certain medications for fungal infections, such as itraconazole, ketoconazole, voriconazole
- Certain medications for irregular heart beat
- Certain medications for seizures, such as carbamazepine, phenobarbital, phenytoin
- Certain medications that treat or prevent blood clots, such as warfarin
- Dextromethorphan
- Digoxin
- Nefazodone
- Midazolam
- Other medications that cause heart rhythm changes, such as dofetilide, ziprasidone
- Rifabutin
- Rifampin
- Rifapentine
- St. John's wort, Hypericum perforatum
- Tizanidine
This list may not describe all possible interactions. Give your health care provider a list of all the medicines, herbs, non-prescription drugs, or dietary supplements you use. Also tell them if you smoke, drink alcohol, or use illegal drugs. Some items may interact with your medicine.
What should I watch for while using this medication?
Visit your care team for regular checks on your progress. You will need to have blood work while taking this medication.
This medication may cause serious skin reactions. They can happen weeks to months after starting the medication. Contact your care team right away if you notice fevers or flu-like symptoms with a rash. The rash may be red or purple and then turn into blisters or peeling of the skin. You might also notice a red rash with swelling of the face, lips, or lymph nodes in your neck or under your arms.
Talk to your care team about your risk of cancer. You may be more at risk for certain types of cancers if you take this medication.
Tell your care team right away if you have any change in your eyesight.
This medication can make you more sensitive to the sun. Keep out of the sun. If you cannot avoid being in the sun, wear protective clothing and use sunscreen. Do not use sun lamps or tanning beds/booths.
Talk to your care team if you wish to become pregnant or think you are pregnant. This medication can cause serious birth defects if taken during pregnancy and for 2 weeks after stopping therapy. Talk to your care team about effective forms of contraception. Do not breast-feed an infant while taking this medication and for 2 weeks after your last dose.