Lapatinib is a small molecule and belongs to a 4-anilinoquinazoline class of Kinase inhibitors. It is the monohydrate of
the ditosylate salt.
It is a yellow solid, and solubility in water is 0.007 mg/mL and in 0.1N HCl is 0.001 mg/mL at 25°C.
It is used to treat advanced breast cancer (HER2-positive) that has spread to other parts of the body (metastatic). It
slows down/ stops the growth of cancer cells.
The tablet inhibits the flow of protein called human epidermal growth factor receptor 2.
Treats the patients with other breast cancers.
In women, during the postmenopausal stage, Lapatinib is prescribed in combination with a hormonal medicine called
Inform your doctor if you are allergic to the ingredients of the tablet or have a medical history of heart, kidney,
liver, and electrolyte imbalance (fluctuations in the levels of potassium and magnesium in the blood) and experience
stomach pain, itching, dark urine, clay-colored stools, or jaundice.
The medicine is restricted to pregnant ladies, planning for pregnancy, and breastfeeding mothers.
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