Sodium bicarbonate is an antacid that neutralizes stomach acid.

Sodium bicarbonate is used to relieve heartburn and indigestion.

Sodium bicarbonate may also be used for purposes not listed in this medication guide.

Ask a doctor or pharmacist before taking sodium bicarbonate if you are on a low-salt diet, or if you have high blood pressure.

Use exactly as directed on the label, or as prescribed by your doctor. Do not use in larger or smaller amounts or for longer than recommended.

Sodium bicarbonate tablets are usually dissolved completely in water before swallowing. Follow al directions on the product label.

Call your doctor if your symptoms do not improve, or if they get worse while using sodium bicarbonate.

Store at room temperature away from moisture and heat.

Ask a doctor or pharmacist if it is safe for you to take this medicine if you have other medical conditions, especially:

• kidney disease;

• liver disease;

• heart disease;

• high blood pressure; or

• if you are on a low salt diet.

It is not known whether sodium bicarbonate will harm an unborn baby. However, sodium bicarbonate can cause fluid to build up in your body, which may be dangerous during pregnancy. Do not use this medicine without a doctor's advice if you are pregnant.

It is not known whether sodium bicarbonate passes into breast milk or if it could harm a nursing baby. Do not use this medicine without a doctor's advice if you are breast-feeding a baby.

Since sodium bicarbonate is used when needed, you may not be on a dosing schedule. Do not take more of sodium bicarbonate than recommended on the product label.

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

Avoid taking sodium bicarbonate without a doctor's advice if you regularly take other medicines.

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Sodium bicarbonate may cause serious side effects. Stop using sodium bicarbonate and call your doctor at once if you have:

• severe stomach pain;

• swelling, rapid weight gain; or

• shortness of breath (even with mild exertion).

Common side effects of sodium bicarbonate may include:

• dry mouth;

• increased thirst; or

• urinating more than usual.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Other drugs may interact with sodium bicarbonate, including prescription and over-the-counter medicines, vitamins, and herbal products. Tell each of your health care providers about all medicines you use now and any medicine you start or stop using.