What should you know about oral targeted therapy?

A targeted medicine is chosen when testing finds a feature that the medicine can block or disrupt. Depending on the cancer, treatment may slow growth, shrink disease, control symptoms, or support another treatment. Oral treatment is taken at home on a prescribed schedule, but it remains active systemic therapy: the medicine travels through the bloodstream and can affect healthy tissues as well as cancer cells.

Take each dose exactly as prescribed and follow instructions about food, water and missed doses. Do not crush, split or double a dose unless the treatment team says this is safe. Tell the oncology pharmacist about every prescription, supplement and herbal product, because interactions can change drug levels. Keep a record of doses and symptoms, attend blood tests, and store the medicine away from children and other household members.

Report new or worsening breathlessness, chest pain, severe diarrhoea or vomiting, fever, unusual bleeding, marked rash, yellowing of the skin, or inability to keep fluids down. Some targeted medicines can affect the heart, liver, lungs, blood counts or skin, so early contact allows the team to check the cause and adjust treatment safely. Do not stop treatment without advice unless an emergency clinician tells you to do so.

Ask what tumour feature supports this medicine, how and when it will be monitored, what to do after a missed dose, which medicines or foods to avoid, and how side effects will be managed. Ask whether treatment is continuous, how response will be assessed, and who to call outside clinic hours.