Why do babies vomit after being fed at night?

Are you wondering why your baby is throwing up just after being fed at night? Does this worry you? Worry not. Here we bring you all the reasons why this might be happening.

First of all, spitting up milk is common in newborns. While vomiting is not similar to spitting milk, this does happen sometimes.

Spit-ups, as well as vomiting, are common during the first few years, and although this might worry you, it is not something you need to take stress about.

How is vomiting different from spitting up?

Vomiting makes everyone uncomfortable, regardless of an adult or a baby. Vomit also differs in look and smell from spit-up. Apart from food, vomit contains stomach juices. Vomiting is a sign that your baby’s stomach is saying no to food.

Worry-free reasons for vomiting


Overfeeding is one of the reasons for vomiting in babies. This is similar to adults. Imagine when was the last time you kept eating, and your stomach had to signal you to stop. Babies have a chance of being overfed when they are drinking from a bottle rather than breastfeeding. Also, since the formula is readily available, you may have accidentally provided a bit extra than required.

Babies who are 4 to 5 weeks old can only hold about 3 to 4 ounces in their tiny tummies at a time. Therefore they need more frequent and smaller feedings. Overfeeding from either breastfeeding and formula will result in throwing up your baby.


Getting babies to burp after feeding is necessary as babies intake a lot of air while gulping down their milk. When this happens, the air in the stomach will result in bloating and makes babies uncomfortable.

This leads to vomiting. To prevent this, make sure the baby does not suck on an empty formula bottle after completing the contents in it. Also, make them burp after feeding by slightly tapping on their back.

What Happens If You Don't Do Tummy Time?
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Acid reflux

Babies may sometimes experience acid reflux, or the sphincter muscles located between the stomach and the esophagus are not strong in the babies, but this strengthens as the baby matures. So these new systems might sometimes find it hard to keep food down. In acid reflux, the milk or formula travels back to babies’ throats, trigging gagging, and vomiting.

To prevent this, fed babies in smaller quantities. For a feeding bottle, make sure the nipple hole is not too large to ensure smaller milk or formula intake. Usually, this problem subsides with growth, and by the time baby are a year older, this issue should be gone. Keep a baby upright up to 20- 30 min after feeding.

Reasons which requires treatment

GERD (Gastroesophageal reflux disease). But if the baby frequently vomits and spit ups, you may want to consult a doctor. Frequent vomiting results from GERD, accompanied by other symptoms such as poor appetite, Crying and arching the back during feeding, which means that your baby is experiencing pain or discomfort, blood or green spit, coughing, and wheezing. The doctor will recommend some medications to treat symptoms of GERD.


Constipation rarely causes vomiting. But there have been such instances where constipation resulted in vomiting. This happens because constipation causes problems such as excess gas, bloating, a hard stomach, etc. These symptoms further have a hand in making babies vomit. Some medications from doctors will ease this issue.

Stomach bug

Another probable reason for vomiting in babies is a stomach bug. This is also called gastroenteritis or stomach flu. This might also lead to vomiting several times. Apart from vomit, a baby will experience other symptoms, including stomach cramps, bloating, diarrhea, and fever. So, you need to visit a doctor if you see such signs.

A gastrointestinal virus

A gastrointestinal virus is common and contagious. If a toddler in daycare is suffering from this, there are high chances that your baby might receive it. If your kid shows symptoms of vomiting, fever diarrhea, rush to a doctor at once.

Motion sickness

Motion sickness is another reason why your baby vomits after being fed. Big moments may result in vomiting in infants; therefore, mothers, after feeding, hold the babies in arms and with light tapping makes them burp to help digest.

Food allergies or intolerance

If the baby vomits right after feeding, this might be due to some food allergy. If your toddler has just started on solid foods, you may not know what they are allergenic too. Peanuts, soy, eggs, wheat, etc., are known to cause 90% of allergies in kids as well as adults. Consult a doctor to learn more.

Lactose intolerance

Babies vomit after a feeding session if there have an intolerance to milk and milk-related products. Although this rare in babies under 1 year. This happens to about 7% of all babies, but kids can outgrow this by the time they reach 5 years. Visit a pediatrician to know more regarding this.

Pyloric stenosis

Pyloric stenosis is a condition when the pyloric sphincter muscles narrow. The location of these muscles is between the stomach and intestine. This narrowing keeps food from passing into the small intestine. This might happen in infants in ages between 2 weeks to 2 months. This condition is characterized by forceful throwing up within 30 minutes after feeding if a doctor suggests surgery for this condition.

Other conditions such as cold, flu, ear infections, medications, overheating, etc., also cause vomiting in babies.
How to help your baby or toddler after they throw up?

Suppose your infant or toddler is vomiting. Trust your intuition and consult a doctor if necessary. Generally, vomiting goes away on its own and doesn’t happen frequently, but if it doesn’t subside on its own or is more frequent, you must consult a doctor to know the root cause of it.

If your baby has vomited, firstly calm down and clean your baby and provide small sips of water to rehydrate them. You can even give them an oral rehydration solution as well as try feeding them after some time. Try feeding their favorites to get back their appetite.

Antara Chowdhary

Antara Chowdhury is a Content Marketer and Strategist with 6 years of experience. She is Master degree holder in Journalism and wants to explore everything she can write on.

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