Greenish vomit indicates that you're throwing up bile, which is digestive fluid from the liver.
When you throw up bile which makes your vomit green, it's often a result of your stomach being empty from vomiting continuously, like with the stomach flu or even morning sickness.
Green vomit is not always serious on it's own, but if the green vomit continues or is accompanied with severe pain, fever or an inability to keep fluids down it can also signal that you have an intestinal blockage or other urgent issue, especially if the first green vomit persists.
If the green vomit occurs with severe abdominal pain, chest pain, fever or weakness or you're unable to keep fluids down for 12 hours or more, or you have constipation or bloating then you should see a doctor or go to urgent care or the ER.
In some cases eating a lot of green and yellow foods can result in green vomit as well, but you should get checked out to be safe.
Bile reflux which is bile backing up from your small intestine can also lead to green vomit.
Throwing up green bile in anyone including baby's toddlers, children teens and adults is an emergency, especially if it does not stop or gets worse.
Throwing up green bile can be a sign of dehydration or a blockage.
A single instance of throwing up green bile on an empty stomach is not always serious, but throwing up repeatedly with green vomit, especially with other symptoms like severe abdominal pain signals a potentially serious health issue like an intestinal blockage or even severe bile reflux, which requires immediate medical attention and medical evaluation.
If it's your first time ever vomiting green bile, you should go to the ER right away as it can indicate a bowel blockage or other urgent issues.
Especially if the green bile vomit is accompanied by fever and or severe abdominal pain, or you have any signs of dehydration like dark urine, dizziness, inability to keep fluids down or confusion, high fever, severe headache or if you're also vomiting blood and or fecal matter.
In infants and young children, vomiting green bile or bilious green vomit is often a sign of a serious blockage like volvulus or malrotation, which requires urgent care.
Or if you vomit green bile repeatedly for longer than 24 hours to 48 hours or you're unable to keep any fluids down or you have experience weight loss since becoming sick you should seek medical attention or even go to urgent care.
The green bile that you're vomiting is a digestive fluid from your liver.
And if your stomach is empty from frequent vomiting, you'll begin to bring up bile.
Although persistent green vomit can mean that the bile is backing up as a result of a blockage or severe reflux.
Other most concerning vomit colors are red, black, or resembling coffee grounds, as these often signal bleeding in the upper digestive tract and require immediate medical attention, potentially indicating ulcers, tears, or other serious issues, though green vomit with bile can also signal blockages needing prompt care.
Red vomit, with fresh blood, suggests you have tears like a Mallory Weiss tear or other bleeding.
Black Vomit/ Coffee grounds are digested blood, often from higher GI bleeds, ulcers or liver problems.
Green vomit though can indicate bile reflux or a bowel blockage, especially with severe pain and so you should seek medical attention to be safe.