Ginger tea is the most evidence-backed drink for settling an upset stomach, with research showing it reduces nausea at doses as low as half a gram of ginger per day. But depending on whether you’re dealing with nausea, cramping, bloating, or diarrhea, different drinks work better for different symptoms. Here’s what actually helps and what to skip.
Ginger Tea
Ginger is the closest thing to a proven anti-nausea drink. The active compounds in ginger root block the same serotonin receptors that prescription anti-nausea medications target. Serotonin plays a major role in triggering the vomiting reflex, and ginger interferes with that signal in both the gut and the brain. It also improves delayed gastric emptying, meaning it helps your stomach move food along when things feel stuck.
A study of 576 patients found that 0.5 to 1.0 grams of ginger daily significantly reduced nausea severity. That’s roughly a half-inch piece of fresh ginger steeped in hot water for 10 minutes, or a single teaspoon of grated ginger. The compounds become more potent when ginger is dried or cooked, so store-bought ginger tea bags still carry real benefit. Fresh ginger steeped at home tends to be stronger.
Peppermint Tea
If your stomach trouble feels more like cramping, bloating, or tightness rather than nausea, peppermint tea is a strong choice. Menthol, the main active compound in peppermint, relaxes the smooth muscle lining your digestive tract by blocking calcium channels that trigger muscle contractions. This is the same mechanism some prescription antispasmodic drugs use.
Research shows peppermint reduces stomach spasms and can speed up early-phase gastric emptying, helping food leave the stomach faster after a meal. It also slows transit through the small intestine, which gives your body more time to absorb water and nutrients. That combination makes it particularly useful for the bloated, overly full feeling that comes with indigestion. People with irritable bowel syndrome often see the most benefit, but the antispasmodic effect works on general stomach discomfort too.
One caveat: peppermint relaxes the valve between your esophagus and stomach. If acid reflux is part of your problem, peppermint can make it worse by letting stomach acid travel upward.
Chamomile Tea
Chamomile works differently from ginger and peppermint. Its primary benefit is reducing inflammation in the digestive lining. The key compound, apigenin, suppresses the production of inflammatory molecules involved in pain sensitivity. Chamomile also has mild antispasmodic and sedative properties, which makes it especially useful when stomach discomfort is tied to stress or anxiety.
Chamomile contains over 120 active plant compounds, including several terpenoids and flavonoids with overlapping anti-inflammatory effects. It won’t stop active nausea the way ginger does, but for a sore, irritated stomach after a bout of vomiting or a day of eating poorly, it’s a gentle option that also helps you relax enough to sleep.
Fennel Tea
Fennel tea is particularly good for gas and bloating. Research shows it has a region-specific effect on the stomach: it relaxes the upper portions (where trapped gas causes that uncomfortable pressure feeling) while actually promoting motility in the lower portion that pushes food into the small intestine. This combination helps release gas while keeping digestion moving forward.
The antispasmodic effect works through calcium channels in the smooth muscle, similar to peppermint. The main active compound, trans-anethole, is well absorbed from the digestive tract, with studies confirming that the concentrations from drinking fennel tea are high enough to produce real effects in gut tissue. You can make fennel tea by crushing a teaspoon of fennel seeds and steeping them in hot water for 5 to 10 minutes.
Rice Water
For diarrhea specifically, rice water is one of the simplest and most effective options. It’s the starchy liquid left over after boiling rice, and it works by adding bulk and slowing stool output. A clinical study comparing rice water to standard oral electrolyte solution found that rice water reduced the number of stools per day more effectively.
To make it, boil half a cup of white rice in two to three cups of water, strain the rice out, and let the cloudy liquid cool. It’s bland enough to keep down when nothing else sounds appealing, and it provides a small amount of easily digestible carbohydrates. This is a good bridge drink when you’re not ready for solid food but need something more substantial than plain water.
Clear Broth and Electrolyte Drinks
When you’re vomiting or have diarrhea, your biggest practical risk is dehydration. Clear broths (chicken, vegetable, or bone broth) provide sodium, potassium, and a small amount of calories in a form your stomach can usually tolerate. Sports drinks or oral rehydration solutions serve a similar purpose by replacing the electrolytes you’re losing. Sipping small amounts frequently works better than drinking a full glass at once, which can trigger another wave of nausea.
What to Avoid
Some drinks people reach for instinctively will make things worse. Ginger ale is the biggest offender. Most commercial brands contain almost no real ginger, and a single can has around 10 teaspoons of sugar. The carbonation increases bloating and gas, while the sugar can pull water into the intestines and worsen diarrhea. Diet versions aren’t better, since artificial sweeteners can be difficult to digest when your gut is already irritated.
Other drinks to avoid when your stomach is unsettled:
- Coffee stimulates acid production and speeds up gut motility, which worsens cramping and diarrhea
- Alcohol irritates the stomach lining directly and promotes dehydration
- Fruit juice is high in fructose, which draws water into the intestines and can cause or worsen loose stools
- Carbonated beverages of any kind increase gas and bloating
- Milk and dairy-based drinks are harder to digest during a stomach episode and can trigger cramping
Apple cider vinegar is another popular suggestion that doesn’t hold up. Research actually shows it slows gastric emptying, meaning food sits in your stomach longer. If you’re already feeling full, bloated, or nauseous, that’s the opposite of what you want. Its high acidity (pH around 2.8 to 3) can also irritate an already inflamed stomach lining.
Lemon water falls into a similar category. Despite claims that it has an alkalizing effect, lemon juice has a pH of 3, making it quite acidic. There is no research supporting lemon water as a remedy for stomach upset or acid reflux. Some people find it pleasant to sip, but it has no demonstrated therapeutic benefit for a troubled stomach.
Matching the Drink to the Symptom
The best choice depends on what’s actually going on. For nausea, ginger tea is the clear winner. For cramping and bloating, try peppermint or fennel tea. For an irritated or inflamed stomach after vomiting, chamomile is the gentlest option. For diarrhea, rice water or an electrolyte drink will do the most good. And in most cases, drinking any tolerable clear fluid in small, frequent sips is more important than picking the perfect one. Staying hydrated is what keeps a bad stomach day from becoming a worse one.