Skip to main content

Citric acid/potassium bicarbonate Side Effects

Medically reviewed by Last updated on Sep 5, 2022.

Applies to citric acid/potassium bicarbonate: oral tablet effervescent.

Serious side effects

Along with its needed effects, citric acid/potassium bicarbonate may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur while taking citric acid/potassium bicarbonate:

More common

  • Confusion
  • diarrhea
  • irregular heartbeat
  • nausea or vomiting
  • nervousness
  • numbness or tingling in the hands, feet, or lips
  • stomach pain
  • trouble breathing
  • weakness or heaviness of the legs

Incidence not known

  • Bloody or black, tarry stools
  • constipation
  • vomiting of blood or material that looks like coffee grounds

Other side effects

Some side effects of citric acid/potassium bicarbonate may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects.

Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

Most common

  • Stomach discomfort


  • Skin rash

More about citric acid/potassium bicarbonate

Patient resources

Related treatment guides

Further information

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.