How to Reduce Spit Up in Babies? | Feeding Fixes That Work

For the full breakdown, see our best Bottles To Reduce Spit Up guide.

Nearly every baby spits up at some point. The lower esophageal sphincter—the muscle that keeps stomach contents down—is still immature in infants, so milk easily flows back up. The good news is that most spit-up is normal and resolves on its own as baby grows. The practical fixes below focus on feeding habits and positioning, and they work for both breastfed and bottle-fed babies.

Feeding Adjustments That Cut Spit-Up

Overfeeding is the single biggest trigger, according to Seattle Children’s. When baby’s stomach gets too full, the excess has nowhere to go but up. The fix is smaller, more frequent feeds rather than larger ones spaced further apart.

• Offer smaller amounts. If you bottle-feed, try offering slightly less per feeding and see if baby seems satisfied.
• Watch the nipple flow. A nipple hole that’s too large makes baby gulp too quickly; one that’s too small increases swallowed air. Both lead to spit-up. Slow-flow nipples are a good starting point.
• Burp during, not just after, feeds. Pause at natural breaks—every few minutes with a bottle, or when baby switches sides breastfeeding—to release swallowed air before it becomes a problem.

For breastfed babies, some infants are sensitive to foods in mom’s diet, with dairy being the most common culprit. If spit-up is severe and accompanied by fussiness or discomfort, talk to your pediatrician about whether an elimination diet is worth trying. Don’t cut out food groups without clinical guidance.

Positioning Rules That Prevent Reflux

Gravity is your best tool against spit-up. Keeping baby upright after feeding gives the immature sphincter time to keep milk down.

• Feed with head higher than the body. Hold baby at a slight incline during the feeding itself, not flat on the lap.
• Keep baby upright for 30 minutes after feeding. Hold baby against your shoulder or in an upright carrier, but skip the bouncing.
• Skip the swing and active play. Bouncing, jostling, and tummy time all press on the stomach.
• Avoid tight diapers and clothing. Anything that compresses baby’s abdomen pushes stomach contents upward.

One rule has no exceptions: always place baby on the back to sleep, even if spit-up is a concern. The American Academy of Pediatrics and every major health organization confirm that back sleeping is the safest position and does not increase choking risk. Never elevate the crib mattress or prop baby on wedges to “help” with reflux without your pediatrician’s explicit direction.

Formula Changes and Thickening: Only With Your Pediatrician

Some pediatricians suggest switching formulas or thickening feeds with rice cereal for babies with persistent spit-up. These options exist, but they’re not DIY fixes. Thickening feeds should only be considered if baby is at least 4 months old, and both changes should happen under professional supervision. Formula switches and thickeners affect calorie intake and digestion in ways that vary from baby to baby—your pediatrician can tell you if either makes sense for your situation.

When Spit-Up Isn’t Normal

Most spit-up is harmless, but some patterns warrant a call to your pediatrician. Contact them if spit-up is accompanied by weight loss, forceful or projectile vomiting, signs of pain or fussiness during feeds, or if baby seems consistently uncomfortable. Green or bloody spit-up, or fewer wet diapers than usual, are also reasons to check in.

The feeding fixes and positioning rules above resolve most spit-up within the first few months. Baby’s sphincter muscle strengthens with time, and by the time solids become a regular part of the diet, spit-up usually fades on its own. Keep feeds small, keep baby upright, and keep the burp cloth handy—this phase passes.