For most cases of stomach pain and nausea, bismuth subsalicylate (the active ingredient in Pepto-Bismol) is the most versatile over-the-counter option, since it targets both symptoms at once. But the best choice depends on what’s causing your discomfort. A stomach bug, acid-related pain, and food poisoning each respond better to different approaches.
Bismuth Subsalicylate for General Upset
Bismuth subsalicylate works on multiple fronts. It stimulates your stomach lining to produce more protective mucus and bicarbonate, essentially shielding irritated tissue from acid. It also has mild antibacterial effects against common gut pathogens like E. coli, Salmonella, and Campylobacter, which is why it’s a go-to for traveler’s diarrhea and food poisoning. On top of that, the salicylate component reduces the intestinal secretions that drive nausea and diarrhea.
The standard dose for adults is two tablets (or two tablespoons of the liquid) every 30 minutes to one hour as needed. Don’t exceed 16 tablets or 16 tablespoons of regular-strength liquid in 24 hours. One important restriction: don’t give bismuth subsalicylate to children. It contains salicylates, a form of aspirin, which has been linked to Reye syndrome, a rare but serious condition in kids.
Acid Reducers for Burning Pain
If your stomach pain feels like burning or comes with heartburn, the problem is likely excess acid. Two types of acid-reducing medications are available over the counter, and they work quite differently.
Famotidine (sold as Pepcid) blocks one of the signals that tells your stomach to produce acid. It starts working within about an hour and lasts roughly 12 hours. Taking it 15 to 60 minutes before a meal can prevent symptoms from starting. This is your better option when you want relief today.
Omeprazole (sold as Prilosec) shuts down acid production more completely by targeting the acid pumps in your stomach lining. It’s more powerful, but slower. Some people notice improvement within the first 24 hours, though it can take one to four days to reach full effect. Once working, it suppresses acid for about a full day. Omeprazole makes more sense for ongoing acid problems lasting several days or weeks, not for quick relief of a single bad episode.
Antacids for Fast but Short Relief
Calcium carbonate (Tums) and magnesium/aluminum combinations (Maalox, Mylanta) neutralize stomach acid on contact. They work in minutes, making them the fastest option for acid-related stomach pain. The tradeoff is that they wear off quickly, usually within one to two hours. If you need something to get you through a meal or a rough hour, antacids are effective. For anything lasting longer, an acid reducer is a better bet.
Ginger for Nausea
Ginger has a surprisingly strong evidence base for nausea specifically. In clinical trials, 1 gram per day (split into three or four doses) consistently reduces nausea across very different contexts: pregnancy, post-surgery recovery, and chemotherapy side effects. A large meta-analysis of six trials found that 1 gram daily for at least four days was significantly better than placebo at reducing pregnancy-related nausea and vomiting. Doses above 1 gram didn’t appear to add much benefit.
You can get ginger in capsule form (250 mg capsules taken three to four times daily), as fresh ginger steeped in hot water, or in ginger chews. If your main complaint is nausea rather than pain, ginger is worth trying alongside or instead of medication.
Peppermint Oil for Cramping and Bloating
Enteric-coated peppermint oil capsules relax the smooth muscle in your gut, which makes them particularly useful when your stomach pain involves cramping, spasms, or bloating. In one trial of adults with irritable bowel syndrome, 79% of those taking peppermint oil had reduced abdominal pain severity, compared with 43% on placebo. It’s also been shown to reduce symptoms of non-ulcer dyspepsia, that fullness and bloating you get even without an ulcer.
The enteric coating matters. Without it, peppermint oil relaxes the valve between your esophagus and stomach, which can cause heartburn and actually make things worse. Look for capsules labeled “enteric-coated” and take 0.2 to 0.4 mL of oil three times daily.
What to Eat (and Avoid)
You may have heard of the BRAT diet (bananas, rice, applesauce, toast), but current guidelines from the National Institute of Diabetes and Digestive and Kidney Diseases don’t recommend restricted diets for stomach illness. Research shows they don’t speed recovery. The better approach is to drink plenty of fluids to replace what you’re losing, then return to your normal diet as soon as your appetite comes back.
That said, certain things tend to make symptoms worse while you’re recovering. Caffeine, high-fat foods (fried food, pizza, fast food), sugary drinks, and dairy products are the most common irritants. Lactose intolerance can actually linger for a month or more after a stomach virus, so if dairy seems to bother you even after you feel better, that’s normal and temporary.
When Stomach Pain and Nausea Signal Something Serious
Most stomach pain with nausea is caused by something self-limiting: a virus, something you ate, too much acid, or stress. But certain patterns point to something more urgent.
- Sudden, severe pain that doesn’t improve with position changes or OTC medication, especially pain sharp enough to make you double over.
- Vomiting blood or material that looks like dark coffee grounds, which can indicate internal bleeding.
- Black or tarry stools, another sign of bleeding in the digestive tract.
- High fever alongside abdominal pain, suggesting infection or significant inflammation.
- A rigid, board-like abdomen that’s extremely tender to even light touch, which can indicate inflammation of the abdominal lining.
- Dizziness or fainting, which may mean internal bleeding and a dangerous drop in blood pressure.
- Yellowing of the skin or eyes, pointing to liver or gallbladder problems.
- Pain that steadily worsens over several days rather than improving.
Localized pain you can point to with one finger, rather than a vague ache, often means a specific organ is involved. Sharp pain in the lower right abdomen could be appendicitis. Pain in the upper right that radiates to the shoulder blade may be gallstones. These need medical evaluation, not OTC treatment.
Children Need a Different Approach
For kids with stomach pain and nausea, the priority is hydration. Small, frequent sips of an oral rehydration solution or clear fluids work better than large amounts at once, which can trigger more vomiting. Don’t give children over-the-counter stomach medications without checking with a pediatrician first. Many adult formulations contain ingredients that aren’t safe for children, and the dosing is different enough that guessing can be harmful. Infants should continue breast milk or formula as usual.