What should you know about Gleevec targeted therapy?

Gleevec, also called imatinib, is designed for cancers whose cells carry particular molecular changes. Blocking these signals can slow or stop the growth of susceptible cells. It is used in selected people with conditions such as [Chronic Myeloid Leukaemia](/conditions/chronic-myeloid-leukaemia/) and [Gastrointestinal Stromal Tumour](/conditions/gastrointestinal-stromal-tumour/). The medicine is taken by mouth, and its role depends on the diagnosis, test results, previous treatment and response. Targeted treatment is different from chemotherapy, although both can be part of a wider cancer plan.

Take each dose exactly as prescribed and follow instructions about food and tablets. Do not stop it or change the dose without speaking with your oncology team. Keep a record of other medicines, vitamins and herbal products because interactions can alter treatment levels. Your team may arrange blood tests to check blood counts, liver function and treatment response. Report troublesome swelling, nausea, diarrhoea, muscle cramps, rash or unusual tiredness so the team can advise you. Store and handle the medicine according to the pharmacy instructions.

Seek urgent medical advice for trouble breathing, facial swelling, severe rash, fainting, unusual bleeding, black stools or yellowing of the skin or eyes. A fever or sudden marked weakness may need prompt assessment, particularly when blood counts are being monitored. Call your oncology service before taking a new medicine if you are unsure about an interaction.

What molecular finding makes this medicine suitable for me? How and when should I take it? Which side effects need same-day advice? Which medicines, foods or supplements should I avoid? How will blood tests and scans show whether it is working?