The fastest way to neutralize acid reflux is to take a liquid or chewable antacid, which works within minutes by directly neutralizing stomach acid. If you don’t have antacids on hand, half a teaspoon of baking soda dissolved in a glass of water can do the same thing. Beyond that, a few simple body positioning changes can reduce symptoms in seconds.
Antacids Work Fastest
Over-the-counter antacids containing calcium carbonate or magnesium hydroxide are the quickest pharmacy option. They neutralize acid on contact, so relief typically begins within a few minutes of chewing or swallowing. The tradeoff is that they wear off relatively fast, usually within one to two hours.
H2 blockers (like famotidine) are another option you’ll find in the same aisle, but they take about an hour to kick in. They work by reducing how much acid your stomach produces rather than neutralizing what’s already there. If you’re looking for something right now, reach for antacids first. If reflux tends to hit you after dinner, taking an H2 blocker before your meal can prevent it from starting.
One safety note: don’t treat antacids like candy. Taking too much calcium carbonate over time can lead to a condition called milk-alkali syndrome, which affects your kidneys and calcium levels. Keep your total daily calcium intake under 1,200 mg unless a doctor has told you otherwise.
The Baking Soda Option
If you don’t have antacids at home, plain baking soda (sodium bicarbonate) is a legitimate substitute. According to Mayo Clinic dosing guidance, adults can dissolve half a teaspoon in a full glass of water and drink it. It neutralizes acid quickly, and you can repeat the dose every two hours if needed.
There are real limits to this remedy, though. Don’t exceed five teaspoons in a single day, and don’t use it for more than two weeks. Baking soda is high in sodium, so it can cause water retention and raise blood pressure. If you have heart disease, kidney disease, high blood pressure, or swelling in your legs, skip this one entirely. Also avoid taking it within one to two hours of any other medication, since it can interfere with absorption.
Change Your Position Right Now
Gravity is your simplest tool. If you’re lying down or slouching, sit up straight or stand. Acid flows upward into your esophagus much more easily when your torso is horizontal or bent forward. Just getting upright can reduce the burning within minutes.
If it’s nighttime and you need to lie down, shift onto your left side. Your stomach sits slightly to the left of your esophagus, so lying on your left keeps the opening to your esophagus above the level of stomach acid, making it harder for acid to travel upward. Research from Amsterdam UMC confirmed this anatomical advantage reduces acid exposure. A wedge pillow that elevates your head and chest also helps by keeping gravity working in your favor, and it’s more effective than simply stacking regular pillows, which tend to bend you at the waist.
Chew Gum
This one sounds oddly simple, but chewing sugar-free gum for 20 to 30 minutes after a meal can meaningfully reduce reflux. Chewing stimulates saliva production, and saliva naturally contains bicarbonate, the same acid-buffering compound in baking soda. The extra saliva you swallow helps wash acid back down out of your esophagus and neutralizes what’s left behind. Stick with non-mint flavors, since peppermint can relax the valve at the top of your stomach and make things worse.
Loosen Tight Clothing
If you’re wearing a tight belt, high-waisted jeans, or anything compressing your midsection, loosen or remove it. External pressure on your abdomen pushes stomach contents upward, the same way squeezing a tube of toothpaste forces the contents toward the opening. This is one of the easiest and most overlooked fixes.
Ginger and Alkaline Water
Ginger may help by speeding up how quickly food moves from your stomach into your small intestine. Once food clears your stomach, acid production slows because there’s nothing left to digest. This means less acid sitting around to reflux upward. Ginger tea or a small piece of fresh ginger is the most practical way to try this. Avoid ginger ale, which is carbonated and can increase stomach pressure.
Alkaline water with a pH of 8.8 or higher can inactivate pepsin, a digestive enzyme that damages esophageal tissue when it refluxes upward. UCLA Health has noted this benefit. It won’t replace an antacid for strong symptoms, but sipping alkaline water between meals may help keep mild reflux in check.
What to Avoid in the Next Few Hours
While you’re managing an active episode, certain things will make it worse. Coffee, alcohol, citrus, tomato-based foods, chocolate, and fatty or fried foods all either relax the valve between your stomach and esophagus or increase acid production. Carbonated drinks expand your stomach with gas, which pushes acid upward.
Don’t lie down for at least two to three hours after eating. If the episode hit you after a large meal, resist the urge to recline on the couch. Walking gently can actually help by promoting digestion and keeping your body upright.
When Reflux Might Be Something Else
Heartburn and heart attack symptoms overlap more than most people realize. Even doctors can’t always tell the difference without testing. Typical heartburn burns in the chest, gets worse after eating or lying down, leaves a sour taste in your mouth, and improves with antacids.
Heart attack symptoms are different in important ways: pressure or squeezing in the chest that spreads to your neck, jaw, or arms, along with shortness of breath, cold sweat, lightheadedness, or sudden fatigue. Women are more likely than men to experience jaw pain, back pain, nausea, or shortness of breath without the classic crushing chest pain. If your chest pain doesn’t respond to antacids, came on suddenly during physical activity, or is accompanied by any of these other symptoms, call 911.
If reflux is hitting you more than twice a week, that pattern points toward gastroesophageal reflux disease (GERD), which needs a different treatment strategy than occasional heartburn. Frequent acid exposure can damage your esophageal lining over time, so recurring symptoms are worth getting evaluated rather than just managed with antacids indefinitely.