Anti-Sickness Drugs

Anti-sickness drugs, also called antiemetics, are medicines used to prevent or relieve nausea and vomiting. Cancer itself, chemotherapy, radiotherapy, surgery, pain medicines, and changes in eating can all contribute to sickness. Anti-sickness drugs help prevent or relieve nausea and vomiting caused by cancer or its treatment.

Different medicines work at different points in the body’s vomiting pathway. A clinician may choose one medicine or combine medicines when the expected trigger is stronger. Some are taken before treatment, while others are used when symptoms begin or on a regular schedule.

Many anti-sickness drugs block chemical signals between the stomach, the vomiting centre in the brain, and the nerves that carry messages between them. Some also slow stomach movement or reduce nausea linked with motion, anxiety, or medicines. The choice depends on the cause, your other medicines, and whether you can swallow or keep tablets down.

Anti-sickness drugs may be given in an infusion unit, hospital, clinic, or at home. They can be prescribed around chemotherapy, radiotherapy, an operation, or medicines such as opioids. Your cancer team may provide a plan covering treatment day and the following days because nausea can begin at different times.

Small frequent meals, cool drinks taken slowly, fresh air, and avoiding strong food smells can make eating easier for some people. Relaxation or guided breathing may reduce nausea linked with tension. These measures support prescribed treatment; they do not replace it when vomiting is persistent.

Take the medicine exactly as directed, including doses scheduled before treatment. Tell the team if nausea breaks through, you cannot keep fluids down, you pass very little urine, or you feel faint. Do not add an over-the-counter remedy without checking, because medicines can interact or worsen drowsiness.

Side effects vary by medicine and may include constipation, headache, tiredness, dry mouth, or dizziness. Some medicines can affect heart rhythm or bowel function, so share your medical history and full medicine list. Seek urgent help for severe weakness, confusion, chest symptoms, or vomiting that prevents hydration.