My Baby Is Vomiting Green or Yellow (Bile)
Medically reviewed by Dr. Michael Okonkwo, MD, FAAP · Board-Certified Neonatologist
Content reviewed against published AAP, AAP, Mayo Clinic guidelines
Last reviewed:
If your baby has been diagnosed with or you suspect is vomiting green or yellow (bile), here is what the evidence says.
The short answer
Bilious (green or bright yellow) vomiting in a baby is a medical emergency until proven otherwise. While older children and adults occasionally vomit bile with prolonged vomiting, in infants, green vomiting can be a sign of a bowel obstruction such as malrotation with volvulus, which requires emergency surgery. If your baby vomits green or bright yellow fluid, seek immediate medical attention.
Key takeaways
- Bilious (green or bright yellow) vomiting in a baby is a medical emergency until proven otherwise. While older children and adults occasionally vomit bile with prolonged vomiting, in infants, green vomiting can be a sign of a bowel obstruction such as malrotation with volvulus, which requires emergency surgery. If your baby vomits green or bright yellow fluid, seek immediate medical attention.
- Usually normal when: Green-tinged spit-up after eating green-colored foods like pureed peas, spinach, or green beans in an older infant
- Call your doctor if: Any episode of bright green or bright yellow (bilious) vomiting in a baby under 12 months, especially without preceding food-related explanation - go to the emergency room immediately, as this could indicate a life-threatening bowel obstruction
- Varies by age — see the age-by-age breakdown below
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What Parents Should Know
According to AAP, Mayo Clinic guidelines, bilious (green or bright yellow) vomiting in a baby is a medical emergency until proven otherwise. While older children and adults occasionally vomit bile with prolonged vomiting, in infants, green vomiting can be a sign of a bowel obstruction such as malrotation with volvulus, which requires emergency surgery. If your baby vomits green or bright yellow fluid, seek immediate medical attention. At 0-1 month, bilious vomiting in a newborn is a surgical emergency until proven otherwise. The most concerning cause is malrotation with midgut volvulus, where the intestine twists on itself, cutting off blood supply. This can lead to intestinal death within hours if not treated surgically. Other causes include duodenal atresia, jejunal atresia, or other congenital bowel obstructions. If your newborn vomits green or bright yellow fluid, go to the emergency room immediately. Do not wait to see if it happens again. It is generally considered normal when green-tinged spit-up after eating green-colored foods like pureed peas, spinach, or green beans in an older infant. However, you should contact your pediatrician promptly if any episode of bright green or bright yellow (bilious) vomiting in a baby under 12 months, especially without preceding food-related explanation - go to the emergency room immediately, as this could indicate a life-threatening bowel obstruction.
Normal vs. Concerning
By Age
What to expect by age
0-1 month
Bilious vomiting in a newborn is a surgical emergency until proven otherwise. The most concerning cause is malrotation with midgut volvulus, where the intestine twists on itself, cutting off blood supply. This can lead to intestinal death within hours if not treated surgically. Other causes include duodenal atresia, jejunal atresia, or other congenital bowel obstructions. If your newborn vomits green or bright yellow fluid, go to the emergency room immediately. Do not wait to see if it happens again.
1-6 months
Bilious vomiting remains a red flag at any age in infancy. While some conditions like malrotation can present later in infancy, intussusception (where one segment of bowel telescopes into another) also becomes a possibility, typically after 3 months. Bilious vomiting combined with abdominal distension, bloody stools (currant jelly appearance), lethargy, or inconsolable crying requires emergency evaluation with imaging studies such as an upper GI contrast study or ultrasound.
6-12 months
At this age, occasional green-tinged spit-up after eating green vegetables (like peas or spinach) is not the same as bilious vomiting and is harmless. True bilious vomiting is bright green or fluorescent yellow and occurs without recent green food intake. Intussusception peaks at 5-9 months and classically presents with intermittent severe abdominal pain (episodes of drawing up legs and crying), vomiting that may become bilious, and eventually bloody stools. This requires emergency treatment.
1-3 years
In toddlers, bilious vomiting is still concerning but has a broader differential. Prolonged vomiting from gastroenteritis can eventually produce bile-colored vomit after the stomach has been emptied. This is less alarming in the context of an obvious stomach bug where the child was initially vomiting food, then clear fluid, then bile. However, bilious vomiting as a first or early symptom, or bilious vomiting with severe abdominal pain and distension, still requires urgent evaluation to rule out obstruction.
What to Tell Your Pediatrician
- Describe when you first noticed is vomiting green or yellow (bile) and how it has changed over time.
- Note your baby's current age and which age-specific patterns you are seeing.
- Mention if your toddler has an episode of bile-colored vomiting during a stomach virus but is otherwise keeping down some fluids and not in significant pain.
- Mention if you are unsure whether your baby's vomit is truly green/bilious or just a food-related color.
- Bring a list of any questions or observations you want to discuss at the appointment.
What Should You Do?
When to take action
- Green-tinged spit-up after eating green-colored foods like pureed peas, spinach, or green beans in an older infant
- Yellow-tinted vomit after prolonged vomiting from a clear stomach virus, where the child initially vomited food and then clear fluid first (context of known gastroenteritis in a child over 1 year)
- Your toddler has an episode of bile-colored vomiting during a stomach virus but is otherwise keeping down some fluids and not in significant pain
- You are unsure whether your baby's vomit is truly green/bilious or just a food-related color
- Any episode of bright green or bright yellow (bilious) vomiting in a baby under 12 months, especially without preceding food-related explanation - go to the emergency room immediately, as this could indicate a life-threatening bowel obstruction
- Bilious vomiting at any age combined with severe abdominal pain, abdominal distension, bloody stools, lethargy, or your child appearing very ill - this is a surgical emergency requiring immediate evaluation
What You Can Do at Home
- Keep track of when you notice is vomiting green or yellow (bile) — noting the time of day, duration, and any triggers can help your pediatrician.
- Remember that green-tinged spit-up after eating green-colored foods like pureed peas, spinach, or green beans in an older infant — this is generally within the range of normal.
- At 0-1 month, focus on observation rather than intervention unless your pediatrician advises otherwise.
- Follow any care instructions from your pediatrician. Keep a written log of symptoms to bring to appointments.
- While monitoring at home, seek immediate care if any episode of bright green or bright yellow (bilious) vomiting in a baby under 12 months, especially without preceding food-related explanation - go to the emergency room immediately, as this could indicate a life-threatening bowel obstruction.
Related Resources
Vomiting Decision Tree
Evaluate vomiting severity and decide when to call the doctor.
Month-by-Month Development
Detailed monthly development guides from birth through 24 months.
When to Call the Doctor
General guide on when to call the pediatrician, visit urgent care, or go to the ER.
Frequently asked questions
Is is vomiting green or yellow (bile) normal?
When should I call the doctor about is vomiting green or yellow (bile)?
When is is vomiting green or yellow (bile) normal?
What causes is vomiting green or yellow (bile)?
What should I mention to my pediatrician about is vomiting green or yellow (bile)?
Is is vomiting green or yellow (bile) normal at 0-1 month?
Is is vomiting green or yellow (bile) normal at 1-6 months?
Should I go to the ER for is vomiting green or yellow (bile)?
Does is vomiting green or yellow (bile) go away on its own?
References
- [1]HealthyChildren.org. Vomiting in Infants. AAP
- [2]Juang D, Snyder CL. Neonatal Bowel Obstruction. Surgical Clinics of North America, 2012. AAP
- [3]Mayo Clinic. Intestinal Obstruction: Symptoms and Causes. Mayo Clinic
Doctor Visit Checklist
Bring this checklist to your next pediatrician visit to discuss My Baby Is Vomiting Green or Yellow (Bile).
Things to mention
- Describe when you first noticed is vomiting green or yellow (bile) and how it has changed over time.
- Note your baby's current age and which age-specific patterns you are seeing.
- Mention if your toddler has an episode of bile-colored vomiting during a stomach virus but is otherwise keeping down some fluids and not in significant pain.
- Mention if you are unsure whether your baby's vomit is truly green/bilious or just a food-related color.
- Bring a list of any questions or observations you want to discuss at the appointment.
Observations to share
- Your toddler has an episode of bile-colored vomiting during a stomach virus but is otherwise keeping down some fluids and not in significant pain
- You are unsure whether your baby's vomit is truly green/bilious or just a food-related color
Urgent signs to report immediately
- Any episode of bright green or bright yellow (bilious) vomiting in a baby under 12 months, especially without preceding food-related explanation - go to the emergency room immediately, as this could indicate a life-threatening bowel obstruction
- Bilious vomiting at any age combined with severe abdominal pain, abdominal distension, bloody stools, lethargy, or your child appearing very ill - this is a surgical emergency requiring immediate evaluation
My notes
From ismybabyalright.com — free, evidence-based baby health guides
All content follows our editorial policy and is reviewed against published clinical guidelines.
2,705 evidence-based guides6 authoritative medical sources5 medical advisory board members
Related Resources
Bottom line
Most cases of is vomiting green or yellow (bile) are normal. Talk to your pediatrician if any episode of bright green or bright yellow (bilious) vomiting in a baby under 12 months, especially without preceding food-related explanation - go to the emergency room immediately, as this could indicate a life-threatening bowel obstruction.
Trust your instincts. If something feels wrong, reach out to your pediatrician. Worrying about your baby means you care — that is a good thing.
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