What is Effer-K: Uses, Warnings & Interactions

Updated May 14, 2025  •  Published Dec 30, 2020

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Effer-K 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:

  • Effer-K

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 Effer-K used for?

What form(s) does Effer-K come in

  • Granule

  • Kit

  • Tablet

  • Powder

  • Fizzy Tablet

  • Long Acting Tablet

  • Long Acting Capsule

  • Liquid

  • Capsule

What are common Effer-K doses?

  • Box 30 Tablets Effervescent

  • Box 100 Tablets Effervescent

  • Bottle 30 Tablets Effervescent

Common Effer-K prescriptions

  • Effer-K
    100 tablets effervescent box

  • Effer-K
    30 tablets effervescent box

  • Effer-K
    1 tablets effervescent packet

How to take Effer-K

  • 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 Effer-K

Effer-K 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.

Effer-K 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

Effer-K 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.

Effer-K 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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