Reproductive health
Medicines for Breastfeeding mastitis
Painful inflammation of breast tissue during breastfeeding, causing a red, hot, tender area and flu-like symptoms — often eased by continued feeding and self-care, with antibiotics if infection sets in.
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 Breastfeeding mastitis?
Mastitis is inflammation of the breast tissue, and it is common in women who are breastfeeding (though it can occasionally occur at other times). During breastfeeding, it often develops when milk is not drained well from part of the breast (for example from a blocked duct, infrequent or missed feeds, pressure on the breast, or problems with the baby attaching), causing milk to build up and the tissue to become inflamed.
- How it is treated: The mainstays of managing breastfeeding mastitis are ensuring the affected breast is drained well and relieving symptoms, and — importantly — continuing to breastfeed, which is safe and helps clear the blockage.
- Self-care: Continuing to breastfeed frequently starting with the affected breast, ensuring good attachment, expressing if still full, gentle massage towards the nipple, warmth before feeds and cool packs after, resting, drinking plenty of fluids, and suitable pain relief all help mastitis.
- When to seek help: See a GP if mastitis symptoms do not improve within about 12–24 hours of self-care, get worse, or you feel very unwell or have a high temperature, if a nipple looks infected, or if a painful lump or a very tender swelling remains after symptoms settle — antibiotics or further assessment (for a possible abscess) may be needed.
What it is
Mastitis is inflammation of the breast tissue, and it is common in women who are breastfeeding (though it can occasionally occur at other times). During breastfeeding, it often develops when milk is not drained well from part of the breast (for example from a blocked duct, infrequent or missed feeds, pressure on the breast, or problems with the baby attaching), causing milk to build up and the tissue to become inflamed. Sometimes bacteria (which can enter through a cracked or sore nipple) lead to infection. Typical symptoms are a painful, red, warm, and swollen area of the breast, often wedge-shaped, sometimes with a hard, tender lump; the breast may feel hot and tender, and there are frequently flu-like symptoms — feeling hot and shivery, aching, and generally unwell, sometimes with a fever. Mastitis usually affects one breast. Although it can make you feel quite unwell and is uncomfortable, it often improves with self-care and continued effective milk removal, and breastfeeding can and usually should continue (it is safe for the baby and helps clear the affected area). However, if symptoms do not improve within a day or so of self-care, or if they are severe or worsening, medical assessment is needed, as antibiotics may be required for infection. Occasionally, untreated or severe mastitis can lead to a collection of pus (a breast abscess), which needs treatment, so it is important not to ignore symptoms that are not settling.
How it is treated
The mainstays of managing breastfeeding mastitis are ensuring the affected breast is drained well and relieving symptoms, and — importantly — continuing to breastfeed, which is safe and helps clear the blockage. Helpful measures include: continuing to breastfeed frequently, starting with the affected breast, and ensuring the baby is well attached (a midwife, health visitor or breastfeeding supporter can help with positioning and attachment); if the breast still feels full after a feed, expressing a little more milk gently; varying feeding positions to help drain different parts of the breast; gentle massage towards the nipple during feeding or expressing; warmth before a feed (which can help the milk flow) and cool packs afterwards for comfort; resting as much as possible, and drinking plenty of fluids; and simple pain relief that is suitable while breastfeeding, which a pharmacist or GP can advise on. If symptoms do not improve within around 12–24 hours of these measures, or if you feel very unwell, have a high temperature, notice a cracked nipple that looks infected, or the symptoms are getting worse, see a GP — antibiotics that are suitable during breastfeeding may be prescribed. If a painful lump remains after the infection settles, or if an abscess is suspected (a very tender, fluctuant swelling), further assessment is needed. The reassuring message is that mastitis, though it can make you feel unwell, often improves with continued breastfeeding and self-care, that breastfeeding can safely continue, and that effective treatment (including antibiotics if needed) is available if it does not settle.
For this condition, these medicines
Medicine classes used for Breastfeeding mastitis
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
Continuing to breastfeed frequently starting with the affected breast, ensuring good attachment, expressing if still full, gentle massage towards the nipple, warmth before feeds and cool packs after, resting, drinking plenty of fluids, and suitable pain relief all help mastitis. Seek help if it is not improving within a day or you feel very unwell.
When to get help
When to see a doctor
See a GP if mastitis symptoms do not improve within about 12–24 hours of self-care, get worse, or you feel very unwell or have a high temperature, if a nipple looks infected, or if a painful lump or a very tender swelling remains after symptoms settle — antibiotics or further assessment (for a possible abscess) may be needed.
Not sure how urgent it is? It is always OK to call NHS 111 for advice, day or night.
Answers
Breastfeeding mastitis: frequently asked questions
Can I keep breastfeeding with mastitis?
Yes — continuing to breastfeed is safe for the baby and helps clear the affected area, so it is usually recommended. Feed frequently, starting with the affected breast, ensure good attachment, and express a little more if the breast still feels full. See a GP if symptoms do not improve within a day or you feel very unwell.
How do you treat breastfeeding mastitis?
With continued effective breastfeeding and self-care — frequent feeding starting with the affected breast, good attachment, gentle massage, warmth before feeds and cool packs after, rest, fluids and suitable pain relief. If it does not improve within about 12–24 hours or you feel very unwell, a GP may prescribe antibiotics suitable during breastfeeding.
Sources
Where this is drawn from
- NHS — Mastitis
- NICE CKS — Mastitis and breast abscess
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