Tommy's PregnancyHub

Your premature baby's digestion

If your premature baby is unwell or is suffering from discomfort such as constipation, colic or reflux it’s important to seek expert advice.


Constipation tends to affect premature babies more than term babies. This is partly because it's more common in babies who are bottle fed. It may also relate to poor muscle tone or immature gut function.

What you can do about constipation

The usual advice for constipation is to give a little cooled boiled water between feeds, and to gently push your baby's knees into his tummy one at a time, to help get his bowels moving. However, talk to your healthcare team, who may alter the mix of the formula you are using, or may prescribe glycerine suppositories.


Gastro-oesophageal reflux, usually known simply as 'reflux', is the name for when the contents of the stomach come back up into the foodpipe or mouth. This may just cause posseting (bringing up small amounts of milk after feeding), but in more severe cases the baby may vomit, cough or choke, and it can sometimes cause soreness or problems with sleeping or feeding. It is very common among babies - especially those born prematurely.

What you can do about reflux

Try nursing your baby on a tilt, with his head much higher than the rest of his body. Sometimes the healthcare team may prescribe a thickener to add to his milk. However, this is not a trouble-free option, as it can cause diarrhoea, coughing and feeding problems. Reflux tends to ease naturally over time as your baby's digestive tract grows.


Colic is the name for frequent episodes of prolonged crying in a baby who seems otherwise healthy. It is very common in young babies. We do not know exactly what causes it, but it is linked to a number of causes related to the digestive system. Many parents feel that their baby is crying because he is in pain, often around the time of feeding. The problem usually resolves itself after three or four months.

What you can do about colic

If your baby has colic, it is recommended that you contact your GP when the excessive crying begins. This is so your GP can rule out conditions that may be causing your baby’s crying.

Your GP is unlikely to refer you to a paediatrician unless there are any other signs that your baby is unwell, or if the problem is getting worse or continues beyond four months.

Ways to soothe your crying baby

  • Keep the room quiet and dimly lit.
  • Cuddle him or give kangaroo care.
  • Take him for a drive or a walk in the buggy, the movement may soothe him.
  • Give him something to suck.
  • Gently push his knees into his tummy in a cycling motion, to help with wind.
  • Swaddle him.
  • Rock him or gently walk around the room with him.
  • Bathe him in warm water.
Review dates

Last reviewed: 1 April, 2017
Next review: 1 April, 2020