Reproductive health

Medicines for Breast cancer

The most common cancer in women (and rare in men), where finding it early — through awareness of changes and screening — greatly improves treatment success, so new breast changes should be checked.

Education and reference only. This explains which medicines are used and why, in plain language — it deliberately contains no doses and is not a substitute for advice from your doctor or pharmacist. Always discuss your own treatment with a qualified clinician, and check the BNF and the product labelling for prescribing detail.

Quick answer

What is Breast cancer?

Breast cancer is a cancer that develops in the tissue of the breast, and it is the most common cancer in women; it can also, less commonly, affect men. The risk increases with age, and other factors — such as a strong family history, certain inherited genes, and lifestyle factors — can affect risk.

  • How it is treated: Breast cancer is diagnosed and treated by specialist breast teams, and the approach depends on the type of breast cancer, its stage and characteristics, and the person’s circumstances and preferences.
  • Self-care: Being "breast aware" (knowing what is normal for you and checking regularly), attending breast screening when invited, and getting any new breast change checked promptly all support early diagnosis.
  • When to seek help: See a GP promptly if you notice a new breast lump or thickening (in the breast or armpit), a change in the size, shape or feel of a breast, skin changes (dimpling, puckering, redness), nipple changes (inversion, rash, crusting or discharge, especially if blood-stained), or any other new or unusual breast change — most are not cancer, but early diagnosis matters.

What it is

Breast cancer is a cancer that develops in the tissue of the breast, and it is the most common cancer in women; it can also, less commonly, affect men. The risk increases with age, and other factors — such as a strong family history, certain inherited genes, and lifestyle factors — can affect risk. The most well-known symptom is a new lump or area of thickened tissue in the breast or armpit, but breast cancer can cause a range of changes, and it is important to be aware of them: a change in the size, shape, or feel of a breast; skin changes (such as dimpling, puckering, or redness); changes to the nipple (such as it becoming inverted/pulled in, a rash or crusting, or discharge, particularly if blood-stained); a lump or swelling in the armpit; and, less commonly, pain (though breast pain alone is usually not due to cancer). Most breast changes and most breast lumps are not cancer — they are often due to benign (non-cancerous) conditions — but any new or unusual change should be checked promptly, because finding breast cancer early greatly improves the chances of successful treatment. In the UK, a breast screening programme offers regular mammograms to women in a certain age range to detect cancers early, before symptoms appear. Treatment depends on the type and stage of the cancer and may include surgery, radiotherapy, chemotherapy, hormone therapy, and targeted treatments, often in combination, and outcomes have improved considerably, with many people successfully treated — particularly when the cancer is found early. Being breast aware, attending screening when invited, and getting changes checked are the key messages.

How it is treated

Breast cancer is diagnosed and treated by specialist breast teams, and the approach depends on the type of breast cancer, its stage and characteristics, and the person’s circumstances and preferences. Assessment of a breast change usually follows a "triple assessment" — a clinical examination, imaging (a mammogram and/or ultrasound), and, if needed, a biopsy (taking a sample) — which determines whether a change is cancer and, if so, its type and features; further scans assess the stage. Treatment options include: surgery — either removing the lump and surrounding tissue (breast-conserving surgery) or the whole breast (mastectomy), often with assessment or removal of lymph nodes, and with reconstruction options available; radiotherapy; chemotherapy; hormone (endocrine) therapy for cancers that are driven by hormones; and targeted therapies for certain cancer types. These are used alone or in combination, tailored to the individual, with the aim of curing the cancer where possible and reducing the risk of it returning. Support through and after treatment, including managing side effects and follow-up, is an important part of care. Prevention and early detection are emphasised: attending breast screening (mammograms) when invited helps find cancers early; being "breast aware" — knowing what is normal for you and checking regularly — helps you notice changes; and getting any new breast change checked promptly is important, because most changes are not cancer, but early diagnosis of those that are greatly improves outcomes. Women at higher risk (for example due to a strong family history) may be offered additional screening or advice. The reassuring messages are that most breast changes are not cancer, that breast cancer treatment has improved greatly with many people successfully treated, and that early diagnosis makes a real difference — so being breast aware, attending screening, and checking changes are worthwhile.

For this condition, these medicines

Medicine classes used for Breast cancer

Each links to a full, dose-free guide — what it is, how it works, who can and cannot use it, side effects, interactions and FAQs.

Beyond medication

Lifestyle and self-care

Being "breast aware" (knowing what is normal for you and checking regularly), attending breast screening when invited, and getting any new breast change checked promptly all support early diagnosis. A healthy weight, regular activity, and limiting alcohol may reduce risk. Those with a strong family history should discuss risk and extra screening with a GP.

When to get help

When to see a doctor

See a GP promptly if you notice a new breast lump or thickening (in the breast or armpit), a change in the size, shape or feel of a breast, skin changes (dimpling, puckering, redness), nipple changes (inversion, rash, crusting or discharge, especially if blood-stained), or any other new or unusual breast change — most are not cancer, but early diagnosis matters. Attend screening when invited.

999Emergency — call 999 or go to A&E
111Urgent advice — call NHS 111 or use 111 online
GPNon-urgent — see your GP or pharmacist

Not sure how urgent it is? It is always OK to call NHS 111 for advice, day or night.

Answers

Breast cancer: frequently asked questions

What are the signs of breast cancer?

A new lump or thickening in the breast or armpit is the best-known sign, but also: a change in the size, shape or feel of a breast; skin changes (dimpling, puckering, redness); nipple changes (becoming inverted, a rash or crusting, or discharge, especially blood-stained); or swelling in the armpit. Most breast changes are not cancer, but any new change should be checked promptly.

Can men get breast cancer?

Yes — breast cancer is much more common in women but can also affect men, usually as a lump or change in the breast tissue behind the nipple. Any new breast lump or change in a man should also be checked by a GP. Finding breast cancer early, in anyone, greatly improves the chances of successful treatment.

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