Tucatinib (oral route)

Tukysa

Tucatinib is used in combination with trastuzumab and capecitabine to treat metastatic HER2-postive breast cancer (cancer that has already spread including the brain) or whose cancer cannot be removed by surgery in patients who have received one or more anti-HER2 breast cancer treatments. Tucatinib is also used in combination with trastuzumab to treat RAS wild-type HER2 positive colorectal cancer (cancer of the colon or rectum) that has spread throughout the body (metastatic) or cannot be removed by surgery (advanced). Your doctor will use a special test to look for these mutations. It is given in patients who have received other cancer treatments (eg, fluoropyrimidine, oxaliplatin, and irinotecan) that did not work well. Tucatinib belongs to the group of medicines, called antineoplastics. It interferes with the growth of cancer cells, which are eventually destroyed. Since the growth of normal cells may also be affected by the medicine, other unwanted effects will also occur. Some of these may be serious and must be reported to your doctor. This medicine is available only with your doctor's prescription. This product is available in the following dosage forms:

In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. This is a decision you and your doctor will make. For this medicine, the following should be considered: Tell your doctor if you have ever had any unusual or allergic reaction to this medicine or any other medicines. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For non-prescription products, read the label or package ingredients carefully. Appropriate studies have not been performed on the relationship of age to the effects of tucatinib in the pediatric population. Safety and efficacy have not been established. Appropriate studies performed to date have not demonstrated geriatric-specific problems that would limit the usefulness of tucatinib in the elderly. However, elderly patients are more likely to have serious unwanted effects (eg, diarrhea, nausea, and vomiting), which may require caution in patients receiving this medicine. There are no adequate studies in women for determining infant risk when using this medication during breastfeeding. Weigh the potential benefits against the potential risks before taking this medication while breastfeeding. Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. In these cases, your doctor may want to change the dose, or other precautions may be necessary. When you are taking this medicine, it is especially important that your healthcare professional know if you are taking any of the medicines listed below. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive. Using this medicine with any of the following medicines is not recommended. Your doctor may decide not to treat you with this medication or change some of the other medicines you take. Using this medicine with any of the following medicines is usually not recommended, but may be required in some cases. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines. Using this medicine with any of the following medicines may cause an increased risk of certain side effects, but using both drugs may be the best treatment for you. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines. Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. Using alcohol or tobacco with certain medicines may also cause interactions to occur. Discuss with your healthcare professional the use of your medicine with food, alcohol, or tobacco. The presence of other medical problems may affect the use of this medicine. Make sure you tell your doctor if you have any other medical problems, especially: