What is Klor-Con/Ef: Uses, Warnings & Interactions

Updated May 14, 2025  •  Published Dec 30, 2020

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Klor-Con/Ef overview

BRAND NAMES:

  • Effer-K, K-99, K-Bicarb, K-Glucon, Klor-Con, Klor-Con/EF, Klor-Con 10, Klor-Con 8, Klor-Con M10, Klor-Con M15, Klor-Con M20, Klor-Con Sprinkle, K-Tab, PharmAssure Potassium, Sodium Bicarbonate-Potassium Bicarbonate

Generic Names:

  • Klor-Con/Ef

Uses:

  • Treats potassium loss from the body.

Therapeutic Classes:

  • Antacid, Sodium Bicarbonate Containing, Potassium Supplement, Urinary Alkalinizer, Urinary Stone Agent

Forms:

  • Granule, Kit, Tablet, Powder, Fizzy Tablet, Long Acting Tablet, Long Acting Capsule, Liquid, Capsule

How it’s taken:

  • By mouth

What is Klor-Con/Ef used for?

K-Effervescent is used to prevent or treat low levels of potassium in the blood (hypokalemia). Potassium is necessary for the proper functioning of your cells, kidneys, heart, muscles and nerves.

What form(s) does Klor-Con/Ef come in

  • Granule

  • Kit

  • Tablet

  • Powder

  • Fizzy Tablet

  • Long Acting Tablet

  • Long Acting Capsule

  • Liquid

  • Capsule

What are common Klor-Con/Ef doses?

  • Box 30 Tablets Effervescent

  • Box 100 Tablets Effervescent

Common Klor-Con/Ef prescriptions

  • Klor-Con/EF
    100 tablets effervescent box

  • Klor-Con/EF
    30 tablets effervescent box

How to take Klor-Con/Ef

  • Your doctor will tell you how much medicine to use. Do not use more than directed.

  • Follow the instructions on the medicine label if you are using this medicine without a prescription.

  • Take with food or right after eating.

  • Powder or effervescent tablet: Mix with water before using. Most powders and tablets must be mixed with at least 4 ounces (1/2 cup) of water or juice, but your specific medicine might have different directions. Drink the mixture right after you mix it.

  • Extended-release tablet or capsule: Swallow with a full glass of water. Do not chew or crush.

  • Measure the oral liquid medicine with a marked measuring spoon, oral syringe, or medicine cup.

  • Oral routeCarefully follow your doctor's instructions about any special diet.

  • Missed dose: Take a dose as soon as you remember. If it is almost time for your next dose, wait until then and take a regular dose. Do not take extra medicine to make up for a missed dose.

  • Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light.

  • Follow the instructions on the medicine label if you are using this medicine without a prescription.

  • Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light.

  • Extended-release tablet or capsule: Swallow with a full glass of water. Do not chew or crush.

  • Missed dose: Take a dose as soon as you remember. If it is almost time for your next dose, wait until then and take a regular dose. Do not take extra medicine to make up for a missed dose.

  • Oral routeCarefully follow your doctor's instructions about any special diet.

  • Your doctor will tell you how much medicine to use. Do not use more than directed.

  • Powder or effervescent tablet: Mix with water before using. Most powders and tablets must be mixed with at least 4 ounces (1/2 cup) of water or juice, but your specific medicine might have different directions. Drink the mixture right after you mix it.

  • Take with food or right after eating.

  • Measure the oral liquid medicine with a marked measuring spoon, oral syringe, or medicine cup.

What to do if you miss a dose of Klor-Con/Ef

Klor-Con/Ef contraindications

  • This medicine is not right for everyone. Do not use it if you had an allergic reaction to potassium or if you have severe kidney disease.

Klor-Con/Ef warnings

  • Tell your doctor if you are pregnant or breastfeeding, or if you have kidney disease, diabetes, heart disease, or digestion problems or trouble swallowing.

  • Your doctor will do lab tests at regular visits to check on the effects of this medicine. Keep all appointments.

  • Keep all medicine out of the reach of children. Never share your medicine with anyone.

  • Severe stomach pain or vomiting

Klor-Con/Ef interactions

  • Some foods and medicines can affect how potassium supplements work. Tell your doctor if you are using any of the following:Diuretic (water pill)ACE inhibitor blood pressure medicineOther medicine that contains potassiumSalt substitute that contains potassium

  • Your doctor will do lab tests at regular visits to check on the effects of this medicine. Keep all appointments.

  • Keep all medicine out of the reach of children. Never share your medicine with anyone.

Klor-Con/Ef side effects

Serious Side Effects

  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing

  • Bloody or black, tarry stools

  • Severe stomach pain or vomiting

  • Confusion, weakness, uneven heartbeat, trouble breathing, numbness in your hands, feet, or lips

Less Serious Side Effects

  • Mild nausea, diarrhea, vomiting, gas

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