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Expect More With TUKYSA

Here’s what you can expect with TUKYSA (tucatinib):

  • Side effects are possible
  • It’s part of a treatment plan that also includes HERCEPTIN® (trastuzumab) and XELODA® (capecitabine)

 

Select Safety Information

What should I tell my healthcare provider before taking TUKYSA?

Before taking TUKYSA, tell your healthcare provider about all of your medical conditions, including if you:

  • have liver problems.
  • are pregnant or plan to get pregnant. TUKYSA can harm your unborn baby.

Females who are able to become pregnant: Your healthcare provider will do a pregnancy test before you start taking TUKYSA. Use effective birth control (contraception) during TUKYSA treatment and for at least 1 week after the last dose of TUKYSA. Tell your healthcare provider right away if you become pregnant or think you may be pregnant during treatment with TUKYSA.

Males with a female partner who can get pregnant: Use effective birth control during TUKYSA treatment and for at least 1 week after the last dose of TUKYSA.

  • are breastfeeding (nursing) or plan to breastfeed. Do not breastfeed during treatment with TUKYSA and for at least 1 week after the last dose of TUKYSA.

Here’s How You’ll Take TUKYSA

TUKYSA (tucatinib) is part of a treatment plan that includes trastuzumab and capecitabine.
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TUKYSA Treatment Tracker Resource

Start and stay on your treatment plan with the TUKYSA Treatment Tracker

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Side Effects are Possible

As with all cancer treatments, side effects are possible. Nearly everyone in the clinical study experienced some side effects, whether they were treated with TUKYSA (tucatinib), along with trastuzumab and capecitabine, or trastuzumab and capecitabine alone.

Icon indicating common side effects of TUKYSA

Common Side Effects

The most common side effects were:

Diarrhea is a common TUKYSA Side Effect
Diarrhea
Mouth sores (stomatitis) are a common TUKYSA Side Effect
Mouth sores (stomatitis)
Rash, redness, pain, swelling, or blisters on the palms of your hands or soles of your feet are common TUKYSA Side Effects
Rash, redness, pain, swelling, or blisters on the palms of your hands or soles of your feet
Decreased appetite is a common TUKYSA Side Effect
Decreased appetite
Nausea is a common TUKYSA Side Effect
Nausea
Stomach-area (abdomen) pain is a common TUKYSA Side Effect
Stomach-area (abdomen) pain
Tiredness is a common TUKYSA Side Effect
Tiredness
Headache is a common TUKYSA Side Effect
Headache
Increased liver function blood tests are a common TUKYSA Side Effect
Increased liver function blood tests
A low number of red blood cells (anemia) is a common TUKYSA Side Effect
A low number of red blood cells (anemia)
Vomiting is a common TUKYSA Side Effect
Vomiting
Rash is a common TUKYSA Side Effect
Rash
  • These are not all the possible side effects of TUKYSA (tucatinib), and you may also get side effects from the other medicines taken with TUKYSA
  • People in the TUKYSA study were not required to take an antidiarrheal medicine
  • Hair loss was not common in people in either of the 2 treatment groups (TUKYSA, along with trastuzumab and capecitabine, or trastuzumab and capecitabine alone) in the clinical study
  • TUKYSA may cause fertility problems in males and females, which may affect the ability to have children. Talk to your healthcare provider if you have concerns about fertility

Side Effects: Unwanted reactions to a drug; common side effects are those that happen often and to many people; they may be serious if they require emergency medical care.

Icon indicating serious side effects of TUKYSA

Serious Side Effects

During treatment with TUKYSA, serious side effects may occur and should be treated by your healthcare provider as early as possible.

  • Serious side effects occurred in 26% of patients who received TUKYSA
  • The most common serious side effects (≥2%) were diarrhea (4%), vomiting (2.5%), nausea (2%), abdominal pain (2%), and seizure (2%)

Be sure to tell  your healthcare provider about any side effects you have. They may be able to help you find ways to manage them. Your healthcare provider may change your dose of TUKYSA, temporarily stop, or permanently stop treatment with TUKYSA if you have certain side effects.

Important Safety Information

Icon indicating serious side effects of TUKYSA

What are the possible side effects of TUKYSA?

TUKYSA may cause serious side effects, including:

  • Diarrhea (watery, loose, or frequent stools) is common and can sometimes be severe. Tell your healthcare provider if you have a change in your bowel movements or severe diarrhea. Severe diarrhea can cause a loss of too much body fluid (dehydration), low blood pressure, kidney problems, and death. Your healthcare provider may prescribe medicines to treat your diarrhea during treatment with TUKYSA.
  • Liver Problems, including severe cases. Your healthcare provider will test your blood to check your liver function before starting and every 3 weeks during treatment with TUKYSA, or as needed. Tell your healthcare provider right away if you have any signs and symptoms of liver problems including itching, yellowing of the skin or eyes, dark or brown urine (tea-colored), pain or discomfort in the right upper stomach area (abdomen), feeling very tired, decreased appetite, or bleeding or bruising more easily than normal.

The most common side effects of TUKYSA:

  • diarrhea
  • rash, redness, pain, swelling, or blisters on the palms of your hands or soles of your feet
  • nausea
  • tiredness
  • increased liver function blood tests
  • vomiting
  • mouth sores (stomatitis)
  • decreased appetite
  • stomach-area (abdomen) pain
  • headache
  • a low number of red blood cells (anemia)
  • rash

Your healthcare provider may change your dose of TUKYSA, temporarily stop, or permanently stop treatment with TUKYSA if you have certain side effects.

TUKYSA may cause fertility problems in males and females, which may affect the ability to have children. Talk to your healthcare provider if you have concerns about fertility.

These are not all the possible side effects of TUKYSA. Discuss side effects with your healthcare provider. You are encouraged to report negative side effects of prescription drugs to the FDA. Visit www.fda.gov/Safety/MedWatch or call 1-800-FDA-1088.

What should I tell my healthcare provider before taking TUKYSA?

Before taking TUKYSA, tell your healthcare provider about all of your medical conditions, including if you:

  • have liver problems.
  • are pregnant or plan to get pregnant. TUKYSA can harm your unborn baby.
    Females who are able to become pregnant: Your healthcare provider will do a pregnancy test before you start taking TUKYSA. Use effective birth control (contraception) during TUKYSA treatment and for at least 1 week after the last dose of TUKYSA. Tell your healthcare provider right away if you become pregnant or think you may be pregnant during treatment with TUKYSA.

    Males with a female partner who can get pregnant:
    Use effective birth control during TUKYSA treatment and for at least 1 week after the last dose of TUKYSA.
  • are breastfeeding (nursing) or plan to breastfeed. Do not breastfeed during treatment with TUKYSA and for at least 1 week after the last dose of TUKYSA.

Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements. TUKYSA may affect the way your other medicines work, and other medicines may affect the way TUKYSA works. Keep a list of all the medicines you take and show it to your healthcare provider and pharmacist every time you get a new medicine.

Indication

Pill bottle

What is TUKYSA?

TUKYSA is a prescription medicine used with the medicines trastuzumab and capecitabine to treat adults with human epidermal growth factor receptor-2 (HER2) positive breast cancer that has spread to other parts of the body such as the brain (metastatic), or that cannot be removed by surgery, and who have received one or more anti-HER2 breast cancer treatments.

It is not known if TUKYSA is safe and effective in children.

Please see Important Facts about TUKYSA.