Red flags — seek medical review if:
- Vomiting is forceful/projectile rather than an easy dribble, especially if it is new or worsening.
- Vomit is green, bloody, or looks like coffee grounds.
- The baby is not gaining weight well, refuses feeds, or seems to be in pain with feeding.
- Breathing difficulty, choking, or colour change occurs with spit-up episodes.
- Vomiting continues beyond the first year or starts for the first time after six months of age.
If your baby has a fever, remember: fever of 38°C or more in a baby under 3 months is an emergency — do not give paracetamol and wait; seek urgent medical care.
Why babies bring milk back up so easily
The muscular valve between the food pipe and the stomach — the same one adults rely on to keep stomach contents down — is still immature in early infancy, and a newborn's stomach is small, roughly horizontal, and sits higher relative to this valve than an adult's does. Combine that with a diet that is entirely liquid, taken in frequent large volumes relative to body size, and swallowed air from feeding, and the result is that bringing up small amounts of milk after or between feeds is extremely common and, in the large majority of babies, entirely normal. This everyday spitting up is sometimes called physiological reflux, to distinguish it from the much smaller group of babies whose reflux causes real distress, feeding difficulty, or poor weight gain.
What normal spit-up looks like
- Small amounts of milk, sometimes curdled-looking, coming up with little or no effort, often during or shortly after a feed, or with a burp.
- A baby who spits up but is otherwise content, feeding well, and gaining weight appropriately.
- Frequency that can look alarming to parents (some babies spit up after most feeds) without this indicating a problem, as long as growth and mood remain good.
- Gradual improvement over the first year as the baby spends more time upright and the valve matures, usually easing significantly by six to twelve months.
What can help, if it bothers your baby or you
- Feed in a calm, unhurried way, and hold the baby fairly upright during and for a short while after feeds.
- Burp midway through and at the end of feeds to help release swallowed air.
- Avoid vigorous, jiggly play immediately after a feed.
- If bottle feeding, check that the teat flow is not too fast and that the bottle is tilted to reduce air intake.
- Smaller, more frequent feeds can sometimes reduce the volume brought back up, but changes to feeding pattern are worth discussing with a midwife or health visitor first, rather than guessing.
When it is something more
A smaller number of babies have reflux that causes real problems — persistent discomfort, arching or crying strongly around feeds, refusing feeds, or poor weight gain — and this pattern deserves a proper clinical assessment rather than home troubleshooting alone, since there are structured ways to assess and, where genuinely needed, manage it.
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Message us on WhatsAppClinical thresholds in this page were reviewed and signed off by Dr Didier Decamps on 17 August 2026. This is general information and does not replace an individual assessment by a qualified clinician.
Written with AI assistance. Reviewed, corrected and signed by Dr Didier Decamps, paediatrician.
Last reviewed: 17 August 2026