The short answer
Zelboraf (Vemurafenib) is a targeted therapy called a kinase inhibitor. It blocks a changed BRAF protein (BRAF V600) that drives some melanomas, slowing the cancer's growth. It is used to help treat melanoma with a BRAF V600 gene change and a rare blood disorder, and is usually given as pills taken by mouth each day. Like all cancer medicines it can cause side effects; this page explains the common ones and the warning signs to report. It is educational only and not a substitute for your care team's advice.
Zelboraf is the brand name; its generic name is vemurafenib.
It is a targeted therapy called a kinase inhibitor — it blocks a changed BRAF protein (BRAF V600) that drives some melanomas, slowing the cancer's growth.
It is used to help treat melanoma with a BRAF V600 gene change and a rare blood disorder.
It is usually given as pills taken by mouth each day.
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The full explanation.
What it is
Zelboraf (Vemurafenib) is a cancer medicine. It is a type of targeted therapy called a BRAF inhibitor. In plain terms, it blocks a changed BRAF protein (BRAF V600) that drives some melanomas, slowing the cancer's growth. You may see it called by its brand name, Zelboraf, or by its generic name, vemurafenib. This page is a general explainer based on the National Cancer Institute's drug information; it does not replace the specific instructions your own care team gives you.
What cancers it treats
According to the National Cancer Institute, vemurafenib is approved to help treat melanoma with a BRAF V600 gene change and a rare blood disorder. Whether it is the right choice for a particular person depends on the cancer type, its stage, test results such as biomarkers, and other treatments already tried. Your oncology team can explain why it was chosen for your situation.
How it's given
As pills taken by mouth each day. It is taken as pills or capsules by mouth, often once or twice a day at home. Take it exactly as prescribed and ask your team before stopping or changing it. How much, how often, and for how long vary from person to person, so follow the exact schedule your care team gives you. If you miss an appointment or a dose, ask your team what to do rather than changing anything yourself.
Common side effects
Not everyone gets the same side effects, and some people have only mild ones. With vemurafenib, commonly reported effects include joint aches, rash, sensitivity to sunlight, tiredness, and hair loss. Many of these can be eased with supportive care. Tell your care team if you notice anything new, if a side effect is getting worse, or if it is making everyday life hard — they can often help, and knowing early usually makes problems easier to manage. Side effects do not tell you whether the medicine is working.
Serious warning signs
Some problems need prompt attention. Contact your care team right away (or use the emergency number they give you) if you notice a fever or other signs of infection, severe or watery diarrhea, new shortness of breath or swelling, and unusual bruising or bleeding. This is not a complete list, and it cannot tell you whether your own situation is an emergency — that is exactly why your team gives you personal instructions and a number to call. When in doubt, it is always reasonable to check in with them.
The bottom line
Zelboraf (Vemurafenib) is one of many tools used in cancer care. Understanding what it is, how it is given, and what to watch for can make treatment feel less overwhelming and help you speak up early about side effects. Keep a simple list of anything you notice, bring your questions to appointments, and remember that your care team — not a website — is the right source for decisions about your treatment.
Words to know
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Common questions
▸What is Zelboraf?
Zelboraf (Vemurafenib) is a targeted therapy called a kinase inhibitor. It blocks a changed BRAF protein (BRAF V600) that drives some melanomas, slowing the cancer's growth. It is used to help treat melanoma with a BRAF V600 gene change and a rare blood disorder.
▸How is Zelboraf given?
It is usually given as pills taken by mouth each day. It is taken as pills or capsules by mouth, often once or twice a day at home. Take it exactly as prescribed and ask your team before stopping or changing it. The exact schedule is set by your care team.
▸What are the common side effects of Zelboraf?
Commonly reported side effects include joint aches, rash, sensitivity to sunlight, tiredness, and hair loss. Not everyone gets them, and many can be managed. Tell your care team about anything new or worsening.
▸Does Zelboraf cure cancer?
That depends on the person, the cancer type, and its stage. For some people a medicine like this can control cancer for a long time or be part of a curative plan; for others the goal is to slow the cancer or ease symptoms. Your care team can explain the goal in your situation.
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