Capecitabine is an oral chemotherapy medication primarily used to treat certain types of cancer, including breast cancer and colorectal cancer. It works by interfering with the growth of cancer cells, ultimately leading to their destruction. Capecitabine is often prescribed after other treatments have failed or in combination with other therapies. Patients typically take Capecitabine in pill form, following a specific dosing schedule. Common side effects may include nausea, vomiting, diarrhea, and fatigue. Regular monitoring by healthcare professionals is essential to manage any adverse effects and to assess the treatment's effectiveness.