A new baby with gas can ruin an evening — for them and for you. The good news is that the immature digestion driving most of it grows up by three to four months, and there is a lot you can do in the meantime that genuinely helps. Most of it is mechanical: get the air out, keep the bowel moving, prevent more air going in next time.
Healthbooq lets you log how feeds went, how much wind came up, and when distress kicked in — which is genuinely useful for spotting whether gas is the real story or whether something else (reflux, latch trouble, an oversupply) is in play.
Where the Gas Actually Comes From
Two main sources.
Swallowed air during feeds. A shallow latch on the breast lets air in around the nipple. A bottle teat that flows too fast for the baby's age makes them gulp; a teat that flows too slowly makes them work hard and suck in air. Crying before a feed — the standard "I missed the hunger cue" scenario — also packs the stomach with air before milk arrives.
Immature digestion. A newborn's gut hasn't yet got its peristalsis (the wave-like muscle contractions that push contents through) properly synchronised. Digestion produces gas as a by-product, and a newborn gut clears it less efficiently than yours does. By around 12 weeks this matures noticeably; by 16 weeks most "windy baby" stories have quieted down.
There's a third, less common source worth knowing about: lactose overload from foremilk-hindmilk imbalance. If a breastfed baby is switched between breasts quickly or fed very frequently with short feeds, they get a lot of foremilk (high lactose, lower fat) and not much hindmilk (higher fat, slows gut transit). The gut sees more lactose than it can process, the rest gets to the colon where bacteria ferment it, and you get a frothy green stool, lots of gas, and a fussy baby. The fix is usually finishing one breast before switching, not lactose-free formula. A breastfeeding support adviser is the right person to talk to if this fits.
Burping (Winding) After Feeds
Burping clears air still in the stomach before it migrates down the gut. Three positions, all of which work — try each and see which your baby likes:
Over the shoulder. Baby upright against your shoulder, your hand supporting their bottom. Other hand rubs or pats firmly between their shoulder blades. Lay a muslin down — there will be posset.
Sitting on your lap. Baby sat slightly forward on your thigh, your hand supporting their chest and chin (so the airway is clear). Other hand rubs the back. Good for babies who don't burp easily on the shoulder.
Face-down across the lap. Baby tummy-down across your thighs, head turned to the side. The pressure on the abdomen often pops a stubborn burp. Rub or pat the back.
A few practical points: a firm steady rub usually beats vigorous patting. Some babies wait two or three minutes before burping — don't give up after thirty seconds. Some babies don't need to burp at every feed, particularly older breastfed babies with a deep latch. If nothing comes up after five minutes of trying, move on; whatever's there will come out later.
For bottle-fed babies, paced bottle feeding (holding the baby semi-upright, the bottle horizontal, pausing every minute or two) cuts down swallowed air at the source and is worth more than vigorous burping after.
Once the Gas Is Lower Down
Once gas has moved past the stomach, burping won't reach it. These help:
Tummy massage. Baby on their back, two or three fingers, gentle clockwise circles around the belly button. Clockwise matters — it follows the direction of the colon. Warm your hands first; baby massage oil or an unscented base oil helps glide. Three to five minutes is plenty.
Bicycle legs. Hold the baby's lower legs and alternate bringing each knee to the chest while extending the other. The compression-release rhythm shifts gas through the colon. Often produces results within a minute or two.
Knees-to-chest hold. Bring both knees up to the abdomen and hold for ten to twenty seconds. Useful for stuck gas low down.
Warm bath. The relaxation helps; many babies pass wind or pass a stool soon after. A 10–15 minute soak is enough.
What does not help: gripe water has no good evidence. Simeticone drops (Infacol, Dentinox) have weak evidence — possibly a small effect, possibly placebo. Neither is harmful at recommended doses. Probiotic drops (Lactobacillus reuteri, sold as BioGaia) have slightly better evidence specifically for breastfed babies with colic, less so for formula-fed.
For Bottle-Fed Babies
A few specific levers:
- Teat flow rate. If the baby finishes a 120 ml bottle in under five minutes, the flow is probably too fast — try a slower teat. If they take 30 minutes and seem exhausted, it may be too slow.
- Anti-colic teats and bottles (MAM, Tommee Tippee, Dr Brown's) have valves that reduce air intake. Some babies do noticeably better on them; others show no difference. Worth trying for a couple of days.
- Bottle angle. Keep the teat full of milk, not half-air, for the whole feed.
- Anti-colic / comfort formulas (partially hydrolysed) have weak evidence and are not first-line. Don't switch formula in the first week of trying — you won't know if it was the formula or just time.
When It's Probably Not Just Gas
If a baby cries inconsolably for more than three hours a day, more than three days a week, for more than three weeks, that pattern is colic — and it does not respond to winding because the cause isn't simply trapped gas. Colic is a label for unexplained crying, not a diagnosis. Most cases ease by 12–16 weeks regardless of intervention.
Worth a GP or health visitor review if:
- The crying is severe and nothing settles it, especially if you are running out of coping reserves
- Feeding seems painful — back-arching, pulling off the breast or bottle crying
- Vomiting is forceful or projectile, not just gentle posseting
- Stools have blood or mucus, or there is severe eczema (think cow's milk protein allergy)
- Faltering weight gain — not on track on the growth chart
- The baby goes hours without a wet nappy, is unusually drowsy, or seems unwell to you
Trust your gut. "Just gas" is the right answer most of the time, but not every time.
Key Takeaways
Gas in young babies comes from two places: air swallowed during feeds, and immature digestion that doesn't move things along smoothly. Most of it sorts itself out by 3–4 months. Burping after feeds clears air still in the stomach; tummy massage, bicycle legs, and a warm bath move gas that's already lower down. A good latch (breast) or appropriate teat flow (bottle) prevents most of the trouble. Crying that doesn't settle with winding and lasts more than three hours a day for more than three days a week — for more than three weeks — fits the colic pattern and is worth a GP review.
