Effer-K 20 Side Effects

Generic name: citric acid/potassium bicarbonate

Medically reviewed by Drugs.com. Last updated on Oct 3, 2023.

Note: This document contains side effect information about citric acid/potassium bicarbonate. Some dosage forms listed on this page may not apply to the brand name Effer-K 20.

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

Serious side effects of Effer-K 20

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 of Effer-K 20

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