Most upset stomachs settle within a few hours with simple, low-cost remedies you likely already have at home. The right approach depends on your main symptom: nausea, cramping, acid discomfort, or diarrhea each respond to slightly different strategies. Here’s what actually works and how quickly you can expect relief.
Start With What You Sip
Dehydration makes every stomach symptom worse, especially if you’ve been vomiting or dealing with diarrhea. Plain water helps, but your body absorbs fluid faster when it contains a small amount of sugar and salt. You can make a simple rehydration drink at home: combine 4 cups of water with half a teaspoon of table salt and 2 tablespoons of sugar. This mimics the ratio used in medical oral rehydration solutions and pulls fluid into your system more efficiently than water alone.
Take small, frequent sips rather than gulping. Large volumes of liquid can stretch an already irritated stomach and trigger more nausea. If plain water is all you can tolerate, that’s fine. Just keep sipping consistently.
Ginger for Nausea
Ginger is one of the most studied natural remedies for nausea, and it genuinely works. Its active compounds (gingerols and shogaols) interact with receptors in your digestive tract to reduce the queasy feeling. Clinical trials show that doses between 250 mg and 1 gram per day, split into three or four portions, are effective. Interestingly, doubling the dose to 2 grams doesn’t improve results, so more isn’t better here.
You don’t need capsules. A thumb-sized piece of fresh ginger steeped in hot water for 5 to 10 minutes makes a strong tea. Ginger chews and even flat ginger ale (let it go flat first, since carbonation can irritate your stomach) are other options, though fresh ginger delivers the highest concentration of active compounds.
Peppermint for Cramping
If your upset stomach comes with cramping or a tight, spasming feeling, peppermint can help. It relaxes the smooth muscle lining your digestive tract by blocking calcium channels in the gut wall, which is the same mechanism some prescription antispasmodic drugs use. Peppermint tea is the gentlest option. Enteric-coated peppermint oil capsules are available over the counter and deliver the oil directly to the intestines.
One important caveat: peppermint relaxes the valve between your esophagus and stomach. If your upset stomach is actually acid reflux or heartburn, peppermint will make it worse by letting acid creep upward. Skip it if you feel burning in your chest or throat.
Choosing the Right Over-the-Counter Option
Different products target different problems, and picking the wrong one means waiting around for relief that won’t come.
- Antacids (calcium carbonate, magnesium hydroxide) neutralize stomach acid on contact. They work within minutes but wear off relatively quickly. Best for occasional heartburn or that sour, acidic feeling after eating.
- H2 blockers (famotidine) reduce acid production rather than just neutralizing it. They take about an hour to kick in but last significantly longer than antacids. Better for persistent or recurring acid discomfort.
- Proton pump inhibitors take one to four days to reach full effect. They’re designed for chronic acid problems, not quick relief from a single episode.
- Bismuth subsalicylate (the pink liquid) is the most versatile option for general stomach upset. It reduces fluid flow into the bowel, calms intestinal inflammation, and has mild antimicrobial effects. It works well for nausea, diarrhea, and that vague “off” feeling that’s hard to pin down.
The Pressure Point That Rivals Medication
There’s a spot on your inner wrist called PC6 (or Neiguan) that has a surprisingly strong evidence base for nausea relief. It sits about three finger-widths below your wrist crease, between the two tendons on your inner forearm. Press firmly with your thumb for two to three minutes, then switch wrists.
A large Cochrane review covering over 5,000 participants found that stimulating this point reduced nausea by about 32% and vomiting by 40% compared to a sham treatment. More striking: it performed equally well as anti-nausea drugs in head-to-head comparisons. This is worth trying while you wait for ginger tea to steep or medication to kick in, and it has zero side effects. Motion sickness wristbands work by applying constant pressure to this same point.
What to Eat (and What to Avoid)
You don’t need to force yourself to eat when your stomach is upset, but once you feel ready, bland and low-fat foods are easiest to tolerate. Plain rice, toast, bananas, and broth are gentle starting points. Eat small portions and chew slowly.
Certain foods actively make things worse. Fatty and fried foods linger in the stomach longer, which increases the chance of acid backing up and prolongs that heavy, uncomfortable feeling. Spicy foods, citrus, tomato-based sauces, and vinegar can intensify heartburn. Chocolate, caffeine, onions, carbonated drinks, and alcohol all relax the valve at the top of your stomach or stimulate acid production. If your stomach is already struggling, these add fuel to the fire.
Dairy is worth mentioning separately. Some people tolerate plain yogurt well because it contains probiotics, but full-fat milk, cheese, and ice cream can worsen nausea and cramping, especially if you have any degree of lactose sensitivity.
Probiotics for Stomach Bugs
If your upset stomach is caused by a stomach bug or food poisoning, probiotics can speed recovery. When used alongside rehydration, they’ve been shown to shorten diarrhea by about 25 hours and cut the risk of symptoms lasting beyond four days by nearly 60%. The strains with the strongest evidence are Lactobacillus rhamnosus GG and Saccharomyces boulardii, both widely available at pharmacies.
Probiotics won’t do much for acid-related stomach problems or general indigestion. They’re specifically helpful when the cause is infectious, like a virus or contaminated food.
Symptoms That Need Medical Attention
Most stomach upset passes on its own, but certain patterns signal something more serious. Blood in your stool (whether bright red, maroon, or black) needs evaluation, as it can indicate anything from polyps to inflammatory bowel disease. Severe cramping that comes on suddenly and doesn’t ease, especially with a swollen abdomen and no passing of gas, can mean a bowel obstruction, which requires emergency care.
Sharp, localized pain on your lower right side that keeps intensifying may point to appendicitis. Difficulty swallowing, unexplained weight loss of 5% or more over six to twelve months, or feeling full after eating very little all warrant a doctor’s visit. Diarrhea lasting more than a few days, heartburn that keeps getting worse or stops responding to medication, and constipation beyond seven days are also worth getting checked.