What is the most important information I should know about Erivedge?

Erivedge can cause your baby to die before it is born (be stillborn) or cause your baby to have severe birth defects.

For females who can become pregnant:

• You should talk with your healthcare provider about the risks of Erivedge to your unborn child
• Your healthcare provider will do a pregnancy test within 7 days before you start taking Erivedge
• In order to avoid pregnancy, you should use birth control during treatment and for 24 months after your final dose of Erivedge. Talk with your healthcare provider about what birth control method is right for you during this time
• Talk to your healthcare provider right away if you have unprotected sex or if you think that your birth control has failed
• Tell your healthcare provider right away if you become pregnant or think that you may be pregnant

For males:

• Erivedge is present in semen. Do not donate semen while you are taking Erivedge and for 3 months after your final dose
• You should always use a condom, even if you have had a vasectomy, during sex with female partners who are pregnant or who are able to become pregnant, during treatment with Erivedge, and for 3 months after your final dose to protect your female partner from being exposed to Erivedge
• Tell your healthcare provider right away if your partner becomes pregnant or thinks she is pregnant while you are taking Erivedge

Pregnancy Exposure Registry:

There is a Pregnancy Exposure Registry for females taking Erivedge who become pregnant. The purpose of this registry is to monitor the health of you and your unborn baby. If you think that you or your female partner may have been exposed to Erivedge during pregnancy, talk to your healthcare provider right away. If you become pregnant during treatment with Erivedge, you or your healthcare provider should report your pregnancy to Genentech at (888) 835-2555.

What should I tell my healthcare provider before taking Erivedge?

• If you are pregnant or plan to become pregnant
• If you are breastfeeding or plan to breastfeed. It is not known if Erivedge passes into your breast milk. You should not breastfeed during treatment and for 24 months after your final dose of Erivedge. Talk to your healthcare provider about the best way to feed your baby during this time
• About all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements

What should I avoid while taking Erivedge?

• Do not donate blood or blood products while you are taking Erivedge and for 24 months after your final dose
• Do not donate semen while you are taking Erivedge and for 3 months after your final dose

What are the possible side effects of Erivedge?

• Serious skin reactions: Severe skin reactions have happened in some people taking Erivedge. You may need to be treated in a hospital because these severe skin reactions can be life-threatening or lead to death. Tell your healthcare provider right away if you develop any of the following signs or symptoms of a severe skin reaction, including:
  • Blisters or peeling of your skin
  • Blisters on your lip, or around your mouth or eyes
  • Mouth sores or genital sores
  • High fever or flu-like symptoms
  • Enlarged lymph nodes
  • Skin pain and burning

Your healthcare provider may permanently stop Erivedge if you develop a severe skin reaction.

• Bone growth problems. Bone growth problems have happened in children who have been exposed to Erivedge. These problems may continue even after stopping treatment with Erivedge
• The most common side effects of Erivedge are:
  • Muscle spasms
  • Hair loss
  • Change in how things taste or loss of taste
  • Weight loss
  • Tiredness
  • Nausea
  • Diarrhea
  • Decreased appetite
  • Constipation
  • Joint pain
  • Vomiting

Erivedge can cause absence of menstrual periods (amenorrhea) in females who are able to become pregnant. It is not known if amenorrha is permanent. Talk to your healthcare provided if you have concerns about fertility.

These are not all of the possible side effects of Erivedge. Because everyone is different, it is not possible to predict what side effects any one person will have or how severe they may be. Call your doctor for medical advice about side effects.