Why Do I Keep Throwing Up? Causes And When To Worry

Vomiting is your body’s way of forcefully emptying the stomach. It is a reflex, not a disease itself. Most of the time it is caused by a short-term infection and stops within 24 hours. But if you keep throwing up for days or weeks, something else is going on. This article explains the common causes of repeated vomiting and clearly outlines when you should see a doctor.

What Are the Most Common Causes of Repeated Vomiting?

The most frequent cause of repeated vomiting that comes and goes is a stomach virus. Viral gastroenteritis, often called the stomach flu, causes inflammation in your stomach and intestines. Research shows this usually lasts one to three days and resolves on its own.

Food poisoning is another common cause. Bacteria like Salmonella or E. coli can cause vomiting within hours of eating contaminated food. Unlike a virus, food poisoning often affects multiple people who ate the same meal.

Pregnancy is a major cause for women of childbearing age. Nausea and vomiting affect up to 80 percent of pregnant women. For most it improves after the first trimester. A severe form called hyperemesis gravidarum affects about 3 percent of pregnancies and requires medical treatment.

Migraines can also cause vomiting. About one-third of people with migraines experience nausea and vomiting during attacks. The vomiting sometimes provides temporary relief from the headache pain.

When Is Vomiting a Sign of Something Serious?

You should worry if vomiting continues for more than 24 hours in adults or 12 hours in children. Dehydration is the main risk. Signs of dehydration include dry mouth, dark urine, dizziness when standing, and urinating less often than normal.

Blood in vomit is always a reason to seek medical care. Bright red blood suggests active bleeding in the esophagus or stomach. Coffee-ground looking vomit means older blood that has been partially digested. Both require immediate evaluation.

Severe abdominal pain along with vomiting can signal appendicitis, pancreatitis, or a bowel obstruction. If the pain is sharp and constant, do not wait to see if it passes. Go to an emergency room.

Vomiting after a head injury is concerning. This can indicate a concussion or bleeding in the brain. If you hit your head and then vomit, seek medical attention right away.

What Causes Chronic or Cyclic Vomiting?

Some people experience vomiting that comes in cycles with no obvious infection. This is called cyclic vomiting syndrome. It affects both children and adults. Episodes can last hours to days and then disappear completely. Between episodes the person feels normal.

Current research suggests cyclic vomiting syndrome is related to problems with how the brain and gut communicate. It is also linked to migraines. Many people with cyclic vomiting syndrome have a family history of migraines.

Gastroparesis is another cause of chronic vomiting. In this condition the stomach does not empty food properly. It is most common in people with diabetes but can occur for other reasons. Symptoms include feeling full quickly, nausea, and vomiting undigested food hours after eating.

Gallbladder disease can cause vomiting after eating fatty meals. The pain is usually in the upper right side of the abdomen. Gallstones are the most common cause. Vomiting typically happens during or right after an attack of pain.

Does Anxiety or Stress Cause Vomiting?

Yes, stress and anxiety can trigger vomiting. The brain and gut are directly connected through the vagus nerve. Intense emotions can activate the vomiting center in the brainstem. Some people report vomiting before public speaking, exams, or stressful events.

Anxiety disorders are linked to higher rates of nausea and vomiting. Studies have found that people with panic disorder often experience gastrointestinal symptoms during attacks. The vomiting is real, not imagined. It is a physical response to a mental state.

Some evidence indicates that treating the underlying anxiety can reduce vomiting episodes. Therapy, medication, or stress management techniques may help. This does not mean the vomiting is “all in your head.” It means the trigger is emotional rather than infectious or structural.

What Home Remedies Actually Help Stop Vomiting?

The most important thing is to rest your stomach. Stop eating solid food for a few hours. Sip small amounts of clear liquids. Start with one tablespoon every five to ten minutes. If you can keep that down, slowly increase the amount.

Good liquids to try include water, clear broth, and electrolyte drinks. Avoid sugary drinks, fruit juice, and dairy products. Sugar can make diarrhea worse. Dairy is hard to digest when your stomach is upset.

Ginger is one of the few remedies with research backing. Studies have found ginger can reduce nausea and vomiting in pregnancy and after surgery. You can try ginger tea, ginger ale made with real ginger, or ginger capsules. Peppermint tea may also help settle the stomach.

The BRAT diet is a common recommendation once you can eat again. BRAT stands for bananas, rice, applesauce, and toast. These foods are bland and easy to digest. Add them back slowly over 24 to 48 hours.

What Medications Are Available for Vomiting?

Over-the-counter options include bismuth subsalicylate, which is the active ingredient in Pepto-Bismol. It can help with vomiting from stomach upset but should not be given to children with viral infections due to Reye syndrome risk.

Antihistamines like dimenhydrinate, found in Dramamine, work for motion sickness. They can cause drowsiness. They are not very effective for vomiting from stomach viruses.

Prescription medications are stronger. Ondansetron, known as Zofran, is commonly used for nausea and vomiting from chemotherapy, surgery, and pregnancy. It works by blocking serotonin in the gut and brain. As of 2026 it remains one of the most effective options for severe vomiting.

Metoclopramide, known as Reglan, helps empty the stomach faster. It is used for gastroparesis and diabetic stomach problems. It can cause side effects like restlessness and muscle spasms in some people.

Do not take anti-nausea medication without knowing the cause. If you have a bowel obstruction, slowing the gut can make things worse. Always check with a doctor before starting any new medication.

Can Dehydration From Vomiting Be Dangerous?

Dehydration is the most common complication of repeated vomiting. Your body loses water, sodium, potassium, and other electrolytes. Severe dehydration can cause kidney damage, low blood pressure, and confusion.

Signs of severe dehydration include not urinating for eight hours, a racing heart, feeling faint, and extreme weakness. In children, look for dry diapers for six hours, crying without tears, and sunken eyes.

Oral rehydration solutions are the best way to replace fluids. They contain the right balance of sugar and salts. Pedialyte is one example. Sports drinks have too much sugar and not enough electrolytes for severe dehydration.

If you cannot keep any liquids down for 12 hours, you may need intravenous fluids. This is done in an emergency room or urgent care. IV fluids work faster than drinking and bypass the stomach entirely.

What to Avoid When You Keep Throwing Up

Do not lie flat right after vomiting. This can cause you to inhale vomit into your lungs, which leads to aspiration pneumonia. Sit upright or lie on your side until you feel stable.

Avoid brushing your teeth immediately after vomiting. Stomach acid weakens tooth enamel. Brushing right away scrubs the acid into your teeth. Rinse your mouth with water and baking soda instead. Wait 30 minutes before brushing.

Do not force yourself to eat. Your body needs time to settle. Eating too soon can trigger another round of vomiting. Wait until you have not vomited for at least six hours before trying solid food.

Avoid alcohol and caffeine. Both irritate the stomach lining and can make vomiting worse. Alcohol also dehydrates you further. Stick to clear liquids until you are fully recovered.