We are independent & ad-supported. We may earn a commission for purchases made through our links.

Advertiser Disclosure

Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.

How We Make Money

We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently from our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.

What are the Reasons for Throwing up Bile?

By Sarah R. LaVergne
Updated Mar 03, 2024
Our promise to you
The Health Board is dedicated to creating trustworthy, high-quality content that always prioritizes transparency, integrity, and inclusivity above all else. Our ensure that our content creation and review process includes rigorous fact-checking, evidence-based, and continual updates to ensure accuracy and reliability.

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

Editorial Standards

At The Health Board, we are committed to creating content that you can trust. Our editorial process is designed to ensure that every piece of content we publish is accurate, reliable, and informative.

Our team of experienced writers and editors follows a strict set of guidelines to ensure the highest quality content. We conduct thorough research, fact-check all information, and rely on credible sources to back up our claims. Our content is reviewed by subject matter experts to ensure accuracy and clarity.

We believe in transparency and maintain editorial independence from our advertisers. Our team does not receive direct compensation from advertisers, allowing us to create unbiased content that prioritizes your interests.

There are a number of reasons why a person might throw up bile, but some of the most common include a lack of anything else to purge after multiple vomiting episodes, intestinal obstructions, and a liver disorder known as bile reflux. In some cases the vomiting may also be a sign of liver damage, usually as a result of excessive drug or alcohol consumption. People who suffer from cyclical vomiting syndrome, a condition that causes sporadic vomiting without warning, may also experience bouts of bile as their stomachs try to compensate for the disruption. Instances of throwing up bile are usually considered serious from a medical perspective, and are almost always signs of a larger problem. Anyone who experiences this problem, particularly if it is recurring, should usually seek the advice of a qualified healthcare provider both to treat the issue in the short term and to prevent further damage into the future.

Bile Basics

Bile is a digestive fluid created in the liver and held in the gallbladder for use in breaking up fat during digestion. It may be yellow or green when expelled, which makes it fairly easy to identify in vomit; it often has the consistency of thick mucus and tends to have a very bitter taste. The main function of bile from a biological standpoint is to neutralize stomach acid and make it easier for the body to digest foods, and it’s usually excreted from the liver into the stomach on a fairly constant basis. In addition to breaking up fats, bile also plays an important role when it comes to flushing bilirubin out of the system, a byproduct of red blood cell breakdown.

Healthy people typically have internal mechanisms that regulate the amount of bile that enters their stomachs, usually in relation to how much food is being consumed or what their specific digestive needs are. When these mechanisms fail, bile can sometimes flow into the stomach in excessive quantities, or can mix with vomit when a person is ill. This is not a normal response to vomiting, and is usually a sign of a larger problem.

Consequence of an Empty Stomach

One exception to the “seriousness” issue may arise in the case of excessive vomiting, usually in response to an intense stomach virus or other temporary irritation. Vomiting bile because the stomach is empty from multiple recent vomiting episodes is often is the body’s defense-mechanism result. That's not to say multiple vomiting episodes should cause no concern, though. A person suffering from nausea and vomiting should be sure to stay well hydrated and may need to consult a doctor if vomiting persists, since prolonged contact with bile can damage the esophagus.

Intestinal Obstructions

When a person has an obstruction in his or her small intestine, this may also cause bile to be expelled. Bile is naturally mixed in with the stomach contents but, once an obstruction is present, the bile can be forced out by vomiting. Some causes of small intestinal obstructions are adhesions, gallstones and inflammatory bowel disease.

Bile Reflux

Bile reflux, a disorder similar to acid reflux, may also be to blame. In this condition, however, the stomach expels bile up the esophagus instead of acid. When there is too much bile in the stomach, the body naturally wants to get rid of it and may respond by vomiting. Bile reflux can be caused by peptic ulcers and gastric surgeries such as gallstone removals. Most stomach surgeries can cause excess bile to build up during the healing phase, but this symptom is often a sign that things aren’t healing quite right.

Drug and Alcohol Use

Drugs and alcohol can also cause this problem. If alcohol is consumed in large quantities and for long periods of time, the stomach lining begins to get irritated, and when this happens the stomach may inadvertently expel bile with vomit. Certain drugs, such as morphine and digitalis, may also cause the brain’s chemoreceptor trigger to fire, which is what causes the urge to vomit. Bile also will often expelled if this happens, particularly if it is already present in large quantities.

Cyclical Vomiting Syndrome

People who suffer from the relatively rare disorder known as cyclic vomiting syndrome (CVS) may also experience bouts of bile in their vomit. This condition is marked by random, often violent vomiting attacks that happen for no apparent reason, which is to say in people who are otherwise healthy. Bouts can last from one to 10 days, and patients will typically see vomiting episodes more than once a month. The constancy and intensity of this condition irritates the stomach, which causes more bile to be produced. The bile is then thrown up so the stomach can rid itself of the excess.

Getting Treatment

It’s usually pretty easy to identify bile in vomit, and anyone who notices this problem consistently — more than once in succession — should usually get a medical check-up to rule out possible serious conditions. Proper liver function and bile production are important parts to overall health. Even short burst of bile vomiting can indicate the presence of a larger problem, and in most cases, the sooner it’s solved, the better the outcome is likely to be.

The Health Board is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.

Discussion Comments

By anon958465 — On Jun 27, 2014

I work at night and at times am deprived of regular hours of sleep. It is then that I have an acute headache and tend to throw up this yucky yellow liquid (bile). Once it comes up, I get instant relief.

By anon926446 — On Jan 18, 2014

I'm a bit different. I throw up bile acid about twice a week when I feel like I need to vomit and it comes up. Maybe my stomach is empty, causing excessive secretion of hydrochloric acid (HCL) and bile is built up to repair this situation. But sometimes I do throw up some sour fluid that is white color. It could be HC, I guess.

By anon338541 — On Jun 15, 2013

I have stomach pains and can swallow things, but it feels weird when I swallow and spit. I'm spitting a lot of phlegm. I ate eggs on toast and nothing came back up. I've had stomach pains five days ago and it's been ongoing since.

By anon326729 — On Mar 23, 2013

I have acid bile malabsorption and I throw up acid bile also. The two must must be connected. I need to see the doctor again.

The Health Board, in your inbox

Our latest articles, guides, and more, delivered daily.

The Health Board, in your inbox

Our latest articles, guides, and more, delivered daily.