Potassium Bicarbonate Side Effects

Medically reviewed by Drugs.com. Last updated on Apr 29, 2024.

Applies to potassium bicarbonate: oral tablet effervescent.

Important warnings This medicine can cause some serious health issues

You should not use this medicine if you also take a potassium-sparing diuretic such as amiloride, eplerenone, spironolactone, or triamterene.

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

Stop using potassium bicarbonate and call your doctor at once if you have:

• confusion;

• fast or irregular heartbeats;

• a light-headed feeling, like you might pass out;

• weakness or a heavy feeling in your legs;

• numbness or tingling in your hands or feet;

• unusual tiredness;

• trouble breathing;

• black, bloody, or tarry stools;

• severe stomach pain or cramping; or

• high potassium--nausea, weakness, tingly feeling, chest pain, irregular heartbeats, or loss of movement.

Common side effects may include:

• nausea, vomiting;

• diarrhea; or

• upset stomach.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects.

Further information

Potassium bicarbonate side effects can vary depending on the individual. Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Some side effects may not be reported. You may report them to the FDA.

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