Allergy
Medicines for Cow's milk allergy
A common food allergy in babies and young children, causing skin, gut or breathing symptoms after milk — managed by removing cow's milk from the diet, with most children growing out of it.
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 Cow's milk allergy?
Cow's milk allergy is one of the most common food allergies in babies and young children, occurring when the immune system reacts to proteins in cow's milk. It comes in two broad forms: an immediate type (reactions within minutes to a couple of hours — hives, swelling, vomiting, and rarely anaphylaxis) and a delayed type (symptoms over hours to days — eczema, reflux, colic, diarrhoea, blood or mucus in the stool, or poor growth).
- How it is treated: Management involves removing cow's milk protein from the child's diet — and, for breastfed babies who react, from the mother's diet — using suitable specialist formula for formula-fed infants where needed, all guided by a health professional and dietitian to ensure nutrition and growth.
- Self-care: Following dietitian advice to remove cow's milk while keeping the diet nutritionally complete, careful label-reading, and reassessing over time (as most children outgrow it) are central.
- When to seek help: See a GP or health visitor about a baby with persistent eczema, reflux, tummy or bowel symptoms, or reactions after milk.
What it is
Cow's milk allergy is one of the most common food allergies in babies and young children, occurring when the immune system reacts to proteins in cow's milk. It comes in two broad forms: an immediate type (reactions within minutes to a couple of hours — hives, swelling, vomiting, and rarely anaphylaxis) and a delayed type (symptoms over hours to days — eczema, reflux, colic, diarrhoea, blood or mucus in the stool, or poor growth). It is different from lactose intolerance, which is a digestive problem, not an allergy. Most children outgrow cow's milk allergy by early school age. Diagnosis is based on the history, sometimes with allergy testing or a supervised trial of removing and reintroducing milk.
How it is treated
Management involves removing cow's milk protein from the child's diet — and, for breastfed babies who react, from the mother's diet — using suitable specialist formula for formula-fed infants where needed, all guided by a health professional and dietitian to ensure nutrition and growth. Careful label-reading is important, as milk is in many foods. Children are usually reassessed over time and milk gradually reintroduced (often following a structured "milk ladder") once tolerance is likely, as most outgrow it. Those at risk of severe reactions have an emergency plan. Because milk is a key source of nutrients, dietitian input is important to keep the diet balanced.
For this condition, these medicines
Medicine classes used for Cow's milk allergy
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
Following dietitian advice to remove cow's milk while keeping the diet nutritionally complete, careful label-reading, and reassessing over time (as most children outgrow it) are central. For breastfed babies who react, the mother may need to avoid dairy too.
When to get help
When to see a doctor
See a GP or health visitor about a baby with persistent eczema, reflux, tummy or bowel symptoms, or reactions after milk. Call 999 for any severe reaction (difficulty breathing, swelling, collapse).
Not sure how urgent it is? It is always OK to call NHS 111 for advice, day or night.
Answers
Cow's milk allergy: frequently asked questions
Is cow's milk allergy the same as lactose intolerance?
No. Cow's milk allergy is an immune reaction to milk protein, while lactose intolerance is a digestive problem with the milk sugar lactose. They are managed differently, so proper diagnosis matters.
Do children grow out of cow's milk allergy?
Most children outgrow it by early school age. They are usually reassessed over time, with milk gradually reintroduced (often via a structured "milk ladder") once tolerance is likely.
Keep reading
Related articles
Sources
Where this is drawn from
- NICE CG116 — Food allergy in children
- NHS — Cow's milk allergy
Related conditions
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