Lapatinib 25 mg comes under the group of medicines named antineoplastic agents. It is generally recommended to be used together with other anti-cancer medications such as capecitabine, trastuzumab. The lapatinib 250 mg is intended to treat HER2+Ve breast cancer which has reached beyond the original tumor or to other organs (advanced/metastatic breast cancer). Lapatinib 25 mg slows or halts the cancerous cells from growing or can kill them. Always administer this medication as directed by a health specialist. Take your dose, either at least one hour before or one hour after food.