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How antacids work
Antacids are over-the-counter (OTC) medications that help neutralize stomach acid.
Antacids can be used to treat symptoms of excess stomach acid, such as:
Antacids usually come in the following drug forms:
- chewable gummy or tablet
- tablet that you dissolve in water to drink
Popular antacid brands include:
Antacids are typically safe for most people. However, people with certain medical conditions should talk with their doctors before taking certain antacids that contain aluminum hydroxide and magnesium carbonate.
For example, people with heart failure may have sodium restrictions to help decrease fluid buildup. However, antacids often contain a lot of sodium. These people should ask their doctor before using antacids.
People with kidney failure may develop a buildup of aluminum after using antacids. This can lead to aluminum toxicity. People with kidney failure also tend to have problems with electrolyte balance. All antacids contain electrolytes, which could make electrolyte balance problems worse.
Talk to your child’s doctor before giving your child antacids. Children don’t typically develop symptoms of excess stomach acid, so their symptoms could be related to another condition.
Side effects from antacids are rare. However, they can occur, even when you use them according to the directions.
Side effects from misuse
Many of the side effects of antacids come from not taking them as directed.
Many antacids — including Maalox, Mylanta, Rolaids and Tums — contain calcium. If you take too much or take them for longer than directed, you could get an overdose of calcium. Too much calcium can cause:
Excess calcium can also lead to alkalosis. In this condition, your body doesn’t make enough acid to function properly.
If you feel like you need to use a lot of an antacid for relief, that might be a sign of another condition. If you’ve taken an antacid according to the directions and haven’t gotten relief, talk to your doctor.
Antacids can interfere with the function of other drugs. If you take other medications, check with your doctor or pharmacist before using antacids.
Some antacids, such as Alka-Seltzer, contain aspirin. The Food and Drug Administration issued a
If you take another medication that increases your risk of bleeding, such as an anticoagulant or antiplatelet drug, you shouldn’t take these antacids.
Be sure to talk to your doctor before taking aspirin-containing antacids if you:
- have a history of stomach ulcers or bleeding disorders
- are older than 60 years old
- drink three or more alcoholic drinks per day
Antacids can often relieve symptoms of excess stomach acid. However, sometimes these symptoms mean you have a more serious condition.
Antacids can only soothe, not cure, some of the symptoms of these conditions. If you have severe pain that doesn’t get better after using the recommended dosage of antacids for two weeks, call your doctor.
- shortness of breath
- pain that radiates to your arms, shoulders, or jaw
- neck or back pain
- vomiting or nausea
If you think you may be experiencing a heart attack, call 911 or your local emergency services.
If you have acid reflux or other symptoms caused by stomach acidity, get to know your OTC medications.
Antacids neutralize the acid that your stomach makes. This can make you more comfortable. On the other hand, H2 receptor blockers and PPIs can block your stomach from making too much acid. This can allow the damage in your stomach and esophagus to heal.
Ask your doctor which is better for you.