Most babies regurgitate or “spit up,” some more than others. They may regurgitate right after feeding or a little later. Sometimes, you may have the impression your baby has regurgitated almost everything he drank, but even though it may seem a lot, most regurgitations only contain a small amount of milk.

Regurgitation happens because the valve that prevents milk flowing back toward the mouth has not fully developed. Regurgitation tends to diminish at around 6 months, and stop completely around one year. Although it is a nuisance to parents, it is normal for babies.

As long as your baby is in good spirits and gaining weight, there’s no reason to be concerned. Most of the time, regurgitation is perfectly harmless.

It is best to see a doctor if your baby:

  • Seems to be in pain
  • Projectile vomits several times a day
  • Wets his diapers less than before
  • Isn’t gaining enough weight