The acids in the stomach oxidize the vomit, and it appears black. The iron present in the blood changes from brown to black and no longer appears red, indicating stoppage of bleeding or bleeding in small amounts. Therefore, a person should consult the doctor immediately if they experience these episodes of black vomit.
Yellow or greenish-vomit is usually a sign that you are throwing up bile. Throwing up yellow bile could indicate a potentially serious medical concern like a hiatal hernia or intestinal blockage. It can also happen if you have stomach flu or food poisoning and continue to vomit after your stomach is empty.
In their normal state, gastric juices are usually clear in color. HCl is an important component in gastric juice. It is a strong acid produced by the parietal cells in the corpus generating a gastric pH of 2-3[1].
Strange colors: Vomit may look bright red or dark (like coffee grounds) if it contains blood. Meanwhile, bile -- a fluid made by your liver that helps with digestion -- can make vomit look bright green. Both are cause for concern. Blood could be a sign of an ulcer or an irritation in your GI tract.
Green or yellow vomit, also known as bile, is produced by the liver and stored in the gallbladder. The release of bile occurs when an individual is vomiting on an empty stomach or is suffering from bile reflux.
Yellow bile is usually a result of changes in the body due to the underlying condition. In most cases, it's no cause for concern, especially if you vomit while your stomach is empty.
Symptoms of acid reflux and bile reflux in your esophagus are virtually the same. If your symptoms include vomit, check the color. Bile has a tell-tale yellow tint. If you also have symptoms of bile reflux in your stomach, such as abdominal pain and indigestion, that might be an important clue.
Yellow-colored vomit can happen for several reasons. If you have an empty stomach and the only content of the vomit is bile, you will notice yellow-colored bile in your vomit. It can also happen when you have morning sickness or dehydration, and lack of fluids is affecting the color of the bile content in the vomit.
White or Foamy Vomit
The vomit appears white or foamy due to acid buildup in the stomach. Therefore, a person should consult the doctor if the condition lasts more than one or two days.
Try foods such as bananas, rice, applesauce, dry toast, soda crackers (these foods are called BRAT diet). For 24-48 hours after the last episode of vomiting, avoid foods that can irritate or may be difficult to digest such alcohol, caffeine, fats/oils, spicy food, milk or cheese.
Resting your stomach, sipping small amounts of fluid, and then eating foods that are "safe" for your stomach will help stop vomiting in most cases. If these tips don't provide relief within a day or two, call your healthcare professional, who can check to see if you are dehydrated and advise you on how to proceed.
Vomiting bile can occur whenever a person throws up, and their stomach is empty. This can happen when someone has stomach flu or food poisoning and has already thrown up all the food in their stomach. It can also happen if a person has not eaten for many hours.
Bile reflux gastritis has been linked to stomach cancer. The combination of bile reflux and acid reflux also increases the risk of the following complications: GERD . This condition, which causes irritation and inflammation of the esophagus, is most often due to excess acid, but bile may be mixed with the acid.
COVID-19-related diarrhea and nausea
Diarrhea caused by COVID-19 tends to be more watery, yellow or green in color. It may be accompanied by cramping and bloating. If you have COVID-19, you will likely develop other symptoms within a day or two, such as fever, cough, congestion and/or loss of taste and smell.
Hydrate with clear liquids
Make hydration your main focus after a bout of vomiting, states Dr. Goldman. Start by drinking small sips of water every 15 minutes for the first three to four hours. You can even suck on ice chips.
Call 911 or emergency medical assistance
Seek prompt medical attention if nausea and vomiting are accompanied by other warning signs, such as: Chest pain. Severe abdominal pain or cramping. Blurred vision.
Sometimes, when heartburn symptoms set in, a few sips of water will bring relief. This can be the result of water neutralizing acids and washing them out of the esophagus. Water has a pH that, at 7, is neutral. This dilutes the more acidic stomach fluids, bringing relief.
If the pain is not relieved shortly after taking antacids, or is accompanied by these symptoms, seek emergency medical care: Squeezing/tightening in the chest. Feeling out of breath. Pain, aching or discomfort radiating from the chest to the arms, back or neck.
"Bile is a yellowish-brown fluid produced by the liver that helps digestion, but which can have a vomit-like odour."
Too much acid in your stomach can overwhelm the prostaglandins (hormone-like chemicals that influence pain and inflammation) in your stomach and duodenum. These hormones help protect the lining of your stomach, but if they are overwhelmed, it can cause ulcers as well as a host of other symptoms.
Allow yourself to rest. Resting propped up in a seated position with the head elevated at least twelve inches above the feet is ideal. Remain in this seated rested position for a minimum of an hour, or until you are no longer experiencing nausea. Do not lie down all the way.
While it might seem tempting to brush your teeth immediately after vomiting, we don't recommend it. That's because throwing up leaves stomach acid in your mouth, and when you brush immediately after, you are actually rubbing that highly destructive acid into your teeth.
Second, just before throwing up your body produces extra saliva, which helps protect your teeth from the strong acid. Third, the vomiting process releases chemicals in your body to make you feel better. So that “I feel better” feeling after throwing up is not just your imagination — it's your biology working.
After your vomiting stops, you may feel weak and lethargic. This is quite common and happens because you haven't eaten in a while. Vomiting may also have left you dehydrated. You also lose electrolytes and salts when vomiting.