The safest sleeping position for a gassy baby is flat on their back. Put your baby on their back for every nap and every night on a firm, flat, noninclined surface made for infant sleep. Gas, colic, spit-up, and reflux do not make side or stomach sleeping safe 1 2.
A baby may look more comfortable across your forearm, upright on your chest, or on their tummy while you soothe them. Those are awake, supervised positions. If the baby falls asleep, transfer them to their separate sleep surface and place them on their back.
The safe sleep setup does not change for gas
Use the same setup for a gassy baby as for any other infant:
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Start every sleep on the back.
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Use a safety-approved crib, bassinet, portable crib, or play yard with a firm, flat, level mattress and fitted sheet.
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Keep the sleep space empty. Do not add a pillow, rolled towel, blanket, wedge, sleep positioner, nest, bumper, or restraint.
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Do not raise one end of the mattress or use an inclined sleeper.
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Keep the baby's sleep surface separate from an adult bed, sofa, chair, or caregiver's chest.
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If a baby falls asleep in a car seat, swing, bouncer, carrier, or stroller outside travel, move them to a firm, flat infant sleep surface as soon as practical.
Products marketed for infant sleep must meet federal safety requirements, and inclined sleepers greater than 10 degrees are banned in the United States. A car seat, swing, or bouncer is not a substitute for a crib or bassinet 3.
Keep placing your baby down on their back even after they learn to roll. Once they can roll from back to stomach and stomach to back on their own, they can remain in the position they choose on a clear, firm sleep surface 1. Never use a device or tight wrapping to hold a baby in one sleep position.
Why young babies seem gassy
All babies produce and pass gas. Young infants are also learning to coordinate sucking, swallowing, digestion, and passing stool. They may swallow air during a feed, especially if they are crying, struggling with milk flow, or repeatedly losing suction.
Grunting, turning red, drawing up the legs, clenching the hands, and passing gas can occur in healthy babies. These signs do not prove that gas is causing the crying. Crying itself leads to more swallowed air, so gas may be a result of a crying spell rather than its original cause 4.
A feeding problem, reflux, constipation, cow's milk protein allergy, infection, or another condition can sometimes look like "gas." Positioning cannot correct those causes. A clinician should assess persistent feeding distress, poor growth, blood or mucus in stool, repeated vomiting, marked abdominal swelling, or a baby who seems ill.
What to try before transferring your baby to sleep
Comfort measures should be gentle, brief, and used only while an adult is awake and watching the baby.
Check how feeding is going
For breastfeeding, gas alone does not prove that the breastfeeding parent's diet is the problem. If feeds involve clicking, dimpled cheeks, repeated loss of suction, persistent nipple pain, or concerns about milk transfer and growth, ask a pediatrician or lactation professional to observe a full feed. Those signs can point to an attachment problem that deserves direct assessment 5.
For bottle feeding with expressed milk or formula, hold the baby close and semi-upright. Angle the bottle so milk flows only when the baby sucks, allow pauses, and stop when the baby turns away, closes their mouth, or otherwise shows they are full. Do not prop the bottle or force the baby to finish it 6.
Milk spilling from the mouth, coughing, gulping, or repeatedly pulling away may mean the nipple flow is too fast for that baby. A very slow flow that makes feeding exhausting can also be a problem. A feeding professional can help match flow and technique to the baby's needs. "Anti-colic" on a bottle does not guarantee less gas, and no one bottle or teat design has been shown to be best for all babies 7.
Burp if it seems to help
You can pause during or after a feed and hold the baby upright against your shoulder or seated on your lap with the head and chest supported. Rub or pat the back gently. Some breastfed babies swallow little air and may not burp.
Burping is optional, not a proven way to prevent colic. In one small randomized trial of 71 healthy infant-caregiver pairs, routine burping did not reduce colic and was associated with more regurgitation. The study was too small to settle every burping question, but it does not support prolonged or forceful attempts to produce a burp 8.
Hold upright only while you are awake
Holding a baby upright after a feed may be comfortable and may reduce spit-up for some babies. There is no proven universal number of minutes. Stay fully awake, support the head and neck, and transfer the baby to their back on the safe sleep surface before you sleep 4.
Do not leave the baby to sleep upright in a car seat, swing, carrier, or propped position. Upright cuddling is caregiver-held comfort, not a sleep position.
Use gentle movement while awake
With the baby awake on their back, you can slowly move the legs in a bicycle motion or make light clockwise strokes over the abdomen. Stop if the baby resists, cries harder, or the abdomen seems tender. These measures may be soothing, but they are not proven to fix the cause of persistent crying.
Tummy time means placing the baby on their stomach while awake and continuously supervised. It supports motor development and may help some babies pass gas, but it must end if the baby becomes drowsy. Tummy time is never stomach sleeping 9 4.
What if the baby also has reflux?
Spitting up is common in infancy and is often normal when a baby feeds well, grows, and is otherwise comfortable. Reflux does not make back sleeping more likely to cause choking or aspiration. Infant airway anatomy and protective reflexes help keep regurgitated material away from the airway when the baby is supine 2.
Do not use left-side sleep, stomach sleep, a wedge, crib elevation, or a positional device for reflux. Pediatric reflux guidelines specifically recommend against head elevation, side positioning, and prone positioning for sleeping infants because safe-sleep risk outweighs a possible change in measured reflux 10 11.
If regurgitation is frequent and distressing, have feeding volume, frequency, latch, and bottle technique assessed. Avoiding overfeeding may be appropriate, but an infant still needs enough milk for hydration and growth. Thickened feeds, cow's milk protein elimination, hypoallergenic formula, and reflux medicine should be considered only with a clinician, not started as a gas remedy 10.
Be cautious with gas and colic products
A product may be widely sold without having strong evidence that it helps an individual baby's gas:
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Simethicone gas drops: A Cochrane review found no benefit over placebo for infantile colic. Colic is not identical to ordinary gas, and the evidence does not support promising quick relief 12.
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Probiotics: Results depend on the exact strain and population. The most encouraging colic findings involved Lactobacillus reuteri DSM 17938 and were mainly seen in exclusively breastfed infants. That does not establish that any probiotic treats any gassy baby. Ask the baby's clinician first, especially for a premature or medically vulnerable infant 13.
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Gripe water and herbal remedies: Formulas vary, and low-quality findings for some herbal mixtures cannot be applied to every product. The same Cochrane review concluded that available herbal evidence was too weak and inconsistent to recommend these agents 12.
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Essential oils: Do not give an infant essential oils by mouth or rub concentrated oils on the skin as a gas treatment. Some can cause skin injury or serious poisoning if swallowed or absorbed, and aspiration of an oil can injure the lungs 14.
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Chiropractic, osteopathic, or craniosacral manipulation: A systematic review did not find that these approaches reduced crying or increased sleep in babies with colic compared with no additional intervention 15.
Do not routinely eliminate foods from a breastfeeding parent's diet or switch formulas because a baby passes gas. NHS guidance finds no evidence that routine maternal diet changes help colic 16. If the baby has blood in stool, persistent vomiting, eczema with feeding symptoms, or poor growth, discuss possible allergy with a clinician before changing breast milk feeding, formula, or supplements.
Protect the caregiver from falling asleep while holding the baby
A long period of crying can exhaust any caregiver. Before an overnight feed or upright hold, notice how sleepy you are. Avoid settling into a sofa, recliner, or soft chair with the baby if there is any chance you will fall asleep. Infant sleep with an adult on these surfaces carries a particularly high risk of suffocation and sleep-related death 1.
If you are becoming drowsy, place the baby on their back in the empty crib or bassinet, even if they are still fussy. Ask another alert adult to take over when possible. If crying is overwhelming you, put the baby safely down and step away briefly to regain control. Never shake a baby 4.
When "gas" needs medical care
Call emergency services now if the baby is struggling to breathe, has blue or gray lips or skin, becomes limp or unresponsive, or is extremely difficult to wake.
Seek urgent medical advice for:
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green or yellow-green vomit, which can contain bile
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blood in vomit, red blood in stool, or black stool
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repeated forceful or projectile vomiting, especially in an infant younger than 2 months
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a swollen, hard, or tender abdomen
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severe or inconsolable pain, an unusual weak or high-pitched cry, or marked lethargy
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poor feeding, repeated vomiting, fewer wet diapers, a dry mouth, no tears, or other signs of dehydration
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poor weight gain or weight loss
These findings can point to obstruction, infection, feeding illness, or another problem that positioning will not solve. NICE recommends urgent assessment for bilious vomiting and progressively forceful vomiting in a young infant, and identifies blood, abdominal distension or tenderness, feeding difficulty, and faltering growth as warning signs 11.
A temperature of 100.4°F (38°C) or higher in a baby younger than 3 months needs immediate medical advice, even if the baby otherwise appears well 17.
For a baby who is growing, feeding, breathing, and acting normally, gas usually does not require a new sleep position. Keep sleep flat and supine, and confine comfort positions to the time when you are awake and actively supervising.
