Chemotherapy agents are medications used to treat cancer by targeting and killing rapidly dividing cells. These drugs can be administered in various ways, including intravenously or orally, and they work by disrupting the cancer cells' ability to grow and multiply. Different types of chemotherapy agents target specific types of cancer, and they may be used alone or in combination with other treatments. While chemotherapy is effective, it can also affect healthy cells, leading to side effects such as nausea, fatigue, and hair loss. The specific side effects depend on the type of chemotherapy agents used and the individual patient. Healthcare providers carefully monitor patients to manage these effects and adjust treatment as needed.