A sour stomach, that uncomfortable mix of nausea, bloating, and acidic burning, usually responds well to a few simple drinks you probably already have at home. Ginger tea, chamomile tea, a baking soda solution, and plain water are the most reliable options. What works best depends on whether your discomfort is mostly acid, gas, or sluggish digestion.
Ginger Tea for Nausea and Slow Digestion
Ginger is one of the best-studied natural remedies for stomach discomfort, and it works in a specific, measurable way: it speeds up gastric emptying, meaning food moves out of your stomach faster instead of sitting there making you feel heavy and nauseated. In a study published in the World Journal of Gastroenterology, participants who took ginger emptied their stomachs about 25% faster than those who took a placebo. Ginger also appears to increase the contractions that push food along your digestive tract, likely by acting on serotonin receptors in the gut.
To make ginger tea, slice about an inch of fresh ginger root and steep it in hot water for 5 to 10 minutes. You can add a small amount of honey if the taste is too sharp. Store-bought ginger tea bags work too, though fresh ginger tends to be more potent. Drink it slowly, especially if you’re feeling nauseated. Ginger is particularly useful when your sour stomach comes with that “food sitting like a brick” feeling, since it directly targets slow digestion.
Chamomile Tea for Cramping and Gas
If your sour stomach leans more toward cramping, gas, or a general churning feeling, chamomile is the better pick. Chamomile relaxes the smooth muscles that line your digestive tract, which helps ease spasms and move trapped gas along. It has a long track record for treating flatulence, indigestion, nausea, and diarrhea. A compound in chamomile called apigenin also has a mild calming effect on the nervous system, which can help when stress is contributing to your stomach trouble.
One particularly interesting finding: a commercial preparation containing chamomile extract was shown to lower gastric acidity as effectively as a standard antacid, while also being more effective at preventing the rebound spike in acid that sometimes follows antacid use. Steep a chamomile tea bag for at least 5 minutes to get the full benefit. Drink it warm, since many people find warm liquids more soothing on an irritated stomach, though the evidence on temperature is limited.
Baking Soda in Water for Acid Relief
For that distinctly acidic, burning type of sour stomach, baking soda (sodium bicarbonate) is one of the fastest-acting options. It directly neutralizes stomach acid on contact. The Mayo Clinic recommends dissolving half a teaspoon of baking soda powder in a full glass of water and drinking it. You can repeat this every two hours if needed, but don’t exceed five teaspoons in a single day.
A few important notes: baking soda is high in sodium, so it’s not a good regular solution if you’re watching your salt intake or managing high blood pressure. It’s also a short-term fix. If you’re reaching for baking soda more than a couple of times a week, your stomach issues likely need a different approach. The taste isn’t great, but the relief typically comes within minutes.
Coconut Water for Gentle Rehydration
Coconut water is naturally alkaline, which means it can help counteract excess stomach acid without the harshness of baking soda. A single cup contains roughly 600 mg of potassium, 60 mg of magnesium, and up to 50 mg of calcium. These electrolytes support fluid balance and can be especially helpful if your sour stomach has come with vomiting or diarrhea that’s left you dehydrated.
The magnesium in coconut water also has mild anti-inflammatory properties that may soothe an irritated stomach lining. Choose plain, unsweetened coconut water. Flavored varieties often contain added sugars that can make bloating and gas worse.
Plain Water, Warm or Cool
Don’t overlook the simplest option. Dehydration slows digestion and can make a sour stomach worse, so sometimes a glass of water is all you need to get things moving again. Gastroenterologists emphasize that the total amount of water you drink matters more than the temperature. That said, some research suggests warm water (around 90 to 110°F) may be slightly more helpful for indigestion than cold water, and many people simply find it more comfortable on a tender stomach. If cold water is what you’ll actually drink, though, that’s perfectly fine.
Drinks That Can Make It Worse
What you avoid matters as much as what you choose. Coffee and other caffeinated drinks stimulate acid production, which is the last thing you want when your stomach already feels sour. Alcohol irritates the stomach lining directly and slows digestion.
Carbonated drinks are tricky. The carbon dioxide gas expands inside your stomach, and drinking more than about 300 ml (roughly 10 ounces) of a carbonated beverage can cause enough distension to trigger discomfort, bloating, and belching. A few sips of plain sparkling water might help you burp and feel temporarily better, but a full glass is likely to make things worse. Sugary sodas combine carbonation with high sugar content, making them a particularly bad choice.
Citrus juices, including orange and grapefruit juice, are highly acidic and tend to aggravate an already irritated stomach. Tomato juice falls into the same category.
What About Apple Cider Vinegar?
Apple cider vinegar is one of the most commonly recommended home remedies for sour stomach across blogs and social media. The theory is that adding acid helps your stomach “reset” its pH. The reality: there is no published research in medical journals supporting the use of apple cider vinegar for heartburn or sour stomach. Zero studies. Harvard Health Publishing reviewed the claim and found no data to support either its effectiveness or its safety for this purpose. Given that apple cider vinegar is itself acidic, drinking it when your stomach is already irritated carries a real risk of making things worse.
Fermented Drinks for Ongoing Issues
If sour stomach is something you deal with regularly, fermented drinks like kefir and kombucha may help over time by supporting the balance of bacteria in your gut. Yogurt-based drinks with live active cultures have been shown to help with both constipation and diarrhea. Drinking about two cups of kefir daily for a month has been linked to more regular bowel movements in people with chronic constipation.
These aren’t quick fixes for the sour stomach you have right now. Probiotic-rich drinks work gradually by shifting your gut bacteria toward a healthier balance. If your sour stomach keeps returning, adding a daily serving of kefir or a similar fermented drink is worth trying alongside the more immediate remedies above.
Signs Your Sour Stomach Needs Attention
Most sour stomachs resolve within a few hours with the right drink and a little time. But certain symptoms point to something more serious: blood in your stool, severe abdominal pain, heartburn that doesn’t respond to antacids, unintended weight loss, or ongoing vomiting or diarrhea that lasts more than a day or two. These warrant a conversation with a doctor rather than another cup of ginger tea.