For a basic upset stomach with nausea, your best starting points are ginger, bismuth subsalicylate (the active ingredient in Pepto-Bismol), or a simple antacid, depending on what’s driving your symptoms. The right choice depends on whether your nausea comes with acid reflux, diarrhea, or just a general queasy feeling, so it helps to match the remedy to what you’re actually experiencing.
Ginger for Nausea Without Other Symptoms
If your main problem is nausea rather than heartburn or diarrhea, ginger is one of the most effective options available. The active compounds in ginger block serotonin receptors in the gut that trigger the nausea signal, and they also help your stomach empty faster when digestion has stalled. Clinical trials have tested doses ranging widely, but roughly 1 gram per day (about half a teaspoon of ground ginger) taken for at least three days appears to meaningfully reduce nausea and vomiting.
You can get ginger through capsules, ginger chews, freshly grated ginger steeped in hot water, or even flat ginger ale made with real ginger (check the label). Capsules give you the most control over dosage, but sipping ginger tea works well for mild, short-term queasiness.
Bismuth Subsalicylate for General Stomach Upset
Bismuth subsalicylate, sold as Pepto-Bismol and store-brand equivalents, is the classic all-purpose option. It reduces inflammation in the intestinal lining, slows fluid movement into the bowel, and can kill some of the bacteria responsible for stomach bugs. It’s approved for heartburn, upset stomach, and diarrhea in adults and children 12 and older.
One important caution: bismuth subsalicylate contains a compound related to aspirin. Do not give it to children under 16, as aspirin-related products carry a risk of Reye’s syndrome, a rare but serious condition affecting the brain and liver. Many over-the-counter stomach remedies contain this ingredient without making it obvious on the front label, so read the drug facts panel carefully.
When Acid Is the Problem
If your stomach upset feels more like burning, sourness, or pressure in the upper abdomen, especially after eating, excess acid is likely involved. Chewable antacids (calcium carbonate, like Tums) neutralize stomach acid and start working within about 15 minutes. The downside is that the relief fades relatively quickly, often within a couple of hours.
If you need longer-lasting relief, an H2 blocker like famotidine (Pepcid) reduces acid production rather than just neutralizing what’s already there. Famotidine takes a bit longer to kick in, around 30 to 45 minutes, but its effects last significantly longer. In clinical testing, famotidine maintained adequate heartburn relief for 7 hours or more in roughly 70% of episodes, compared to about 61% for antacids alone over the same period. Some products combine both an antacid and famotidine to give you fast onset with lasting relief.
Peppermint Oil: Helpful but With a Catch
Peppermint oil relaxes the smooth muscle in your digestive tract, which can relieve cramping and that heavy, bloated feeling. However, it also relaxes the valve between your esophagus and stomach. If acid reflux is part of your problem, peppermint can make heartburn worse.
Enteric-coated peppermint oil capsules are designed to dissolve in the lower gut rather than the stomach, which avoids this issue. If your upset stomach feels more like cramping or bloating without any acid component, peppermint tea is fine. If you have any reflux symptoms, stick with the coated capsules or skip peppermint entirely.
Staying Hydrated Matters More Than You Think
Vomiting and diarrhea drain fluids and electrolytes fast, and dehydration can make nausea worse on its own. Water alone isn’t ideal because it doesn’t replace the sodium and potassium you’re losing. Oral rehydration solutions (like Pedialyte or store brands) are formulated with a specific balance of sodium and glucose that helps your gut absorb fluid efficiently. The optimal ratio is roughly equal parts sodium and glucose, though most commercial products use a 1:3 ratio and still work well.
If you don’t have a rehydration solution on hand, sipping clear broth accomplishes something similar. Take small, frequent sips rather than gulping large amounts, which can trigger more vomiting.
What to Eat While Recovering
You’ve probably heard of the BRAT diet: bananas, rice, applesauce, and toast. It’s a reasonable starting point for the first day or two, but there’s no medical reason to limit yourself to only those four foods. Any bland, easy-to-digest food works: brothy soups, oatmeal, boiled potatoes, crackers, or unsweetened dry cereal.
Once the worst has passed and you can keep food down comfortably, expand to more nutritious options. Cooked carrots, sweet potatoes without skin, skinless chicken or turkey, fish, eggs, and avocado are all gentle on the stomach while providing the protein and nutrients your body needs to recover. Staying on a restrictive diet too long can actually slow recovery by depriving you of calories and essential nutrients.
If Your Stomach Upset Includes Diarrhea
Bismuth subsalicylate handles mild diarrhea alongside nausea and is usually the better first choice because it addresses both symptoms. Loperamide (Imodium) is a stronger option that specifically slows gut motility, but it only treats diarrhea and won’t help with nausea. Loperamide is approved for acute diarrhea in adults and children 2 and older. If your main complaint is nausea with some loose stools, bismuth subsalicylate covers more ground. If the diarrhea is the dominant problem, loperamide is more targeted.
Signs That Need Immediate Attention
Most stomach upset resolves within a day or two. Certain symptoms, though, signal something more serious. Get to an emergency room if your vomit contains blood, looks like coffee grounds, or is green. The same applies if you have severe abdominal pain or cramping, chest pain, confusion, blurred vision, or a high fever with a stiff neck.
Watch for signs of dehydration: excessive thirst, dark urine, dry mouth, dizziness when standing, or urinating far less than normal. For adults, vomiting that lasts more than two days warrants a doctor visit. For children under 2, the threshold is 24 hours. For infants, it’s 12 hours. If you’ve had recurring bouts of nausea and vomiting for more than a month, or you’re losing weight without trying, that also calls for medical evaluation.