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This article is for general information only and does not replace medical advice. If in doubt, contact your paediatrician or midwife.

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Baby Spitting Up (Happy Spitter)

Almost all babies spit up — and in most cases it's completely harmless. The so-called 'happy spitter' feeds well, gains weight, and is cheerful — even when milk comes back up after every feed. The problem is more of a laundry issue than a medical one. Spitting up is NOT the same as vomiting.

Possible Causes

  • 1Immature stomach sphincter: the valve between oesophagus and stomach is still weak in babies
  • 2Small stomach: a newborn stomach holds only 20-30 ml — overfilling leads to spitting up
  • 3Air swallowing during feeding (especially in bottle-fed babies)
  • 4Too fast milk flow (strong let-down reflex in the mother)
  • 5Position change directly after feeding

What You Can Do

  • Hold upright for 10-15 minutes after feeding (let them burp)
  • Smaller, more frequent feeds instead of large portions
  • When breastfeeding: take baby off when drinking too fast, burp in between
  • Use bottle teats with a small hole (slow flow)
  • Slightly elevate upper body during sleep (e.g., wedge under mattress, NO pillow)

When to See a Doctor

  • Baby is not gaining weight or losing weight → this is NO longer a happy spitter
  • Projectile vomiting (forceful, over a distance) → rule out pyloric stenosis
  • Green or bloody vomit → go to A&E IMMEDIATELY
  • Baby cries and arches during spitting up (pain = reflux, not spitting up)
  • Baby refuses food or drinks significantly less

Age-Specific Notes

Spitting up usually starts in the first 2 weeks and peaks at 2-4 months. From 6 months it improves with solids and sitting upright. By 12-18 months it has completely stopped for most children. About 50% of all healthy babies spit up regularly — you're not alone!

Frequently Asked Questions

When is spitting up normal and when isn't it?
Normal (happy spitter): Baby is content, feeds well, gains weight, spits up effortlessly. NOT normal: Baby cries while spitting up, refuses food, doesn't gain weight, vomits forcefully or green. The rule of thumb: if your baby is thriving and happy, spitting up is just a laundry problem.
What's the difference between spitting up and vomiting?
SPITTING UP: Milk flows back effortlessly, baby is relaxed, small amount (1-2 tablespoons, but looks like more). VOMITING: Milk comes back forcefully, baby is strained and usually unwell. Vomiting needs medical evaluation, spitting up usually doesn't.
Do I need to feed again after spitting up?
Usually not. The amount spit up looks like more than it is (milk mixed with saliva and stomach acid). If your baby shows hunger again after spitting up, you can offer a small top-up. But don't overfeed out of worry — it makes the spitting up worse.

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This article is for general information only. It does not replace individual medical advice. If you have concerns, contact your paediatrician, midwife, or call emergency services.