What to expect from chemotherapy for HER2-positive breast cancer

Your oncology team chooses medicines and timing according to the cancer’s features, its extent, your general health and whether treatment is intended before surgery, after surgery or for advanced disease. A visit may include blood tests, a review of symptoms, medicines to prevent nausea, and an infusion through a cannula or central line. Some plans combine chemotherapy with a HER2-targeted medicine; these treatments work in different ways and may have separate monitoring needs.

Common effects can include tiredness, nausea, appetite changes, mouth soreness, altered taste and temporary hair loss. Chemotherapy can lower blood-cell counts, which may increase infection risk or contribute to bruising and breathlessness. Not everyone has the same effects, and symptoms can change from cycle to cycle.

Keep a written list of medicines, temperature readings and symptoms, and take it to appointments. Drink according to your team’s advice, choose small nourishing meals when appetite is low, and plan help with transport or household tasks on more tiring days. Ask before taking a new medicine, supplement or vaccine. Protect sore skin, use gentle mouth care and follow the team’s instructions about line care.

Contact your oncology service promptly for a fever or feeling suddenly unwell, chills, shortness of breath, chest pain, uncontrolled vomiting, inability to drink, severe diarrhoea, unusual bleeding or a painful red line site. Do not wait for the next appointment if symptoms are severe; use local emergency services for severe breathing difficulty, collapse or confusion.

Which medicines will I receive, and what is the purpose of each one? How will HER2-targeted treatment be coordinated with chemotherapy? Which symptoms should I report the same day? Will I need a port or other central line, and how will heart health be monitored? What support is available for fertility, work, nutrition and emotional wellbeing?