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K-Tab

Last reviewed on RxList: 7/28/2009
K-Tab Side Effects Center

Medical Editor: John P. Cunha, DO, FACOEP

Last reviewed on RxList 02/03/2017

K-Tab (potassium chloride) Extended-Release Tablets is a form of the mineral potassium used to prevent or to treat low blood levels of potassium (hypokalemia). Potassium levels can be low as a result of a disease or from taking certain medicines, or after a prolonged illness with diarrhea or vomiting. Common side effects of K-Tab include:

  • stomach pain or upset,
  • nausea,
  • vomiting,
  • diarrhea,
  • tingling in your hands or feet, or
  • the appearance of a potassium chloride tablet in your stool.

Tell your doctor if you have serious side effects of K-Tab including:

  • difficult or painful swallowing, or
  • feeling as if the capsule/tablet is stuck in your throat.

Dosage of K-Tab is adjusted to the needs of each patient. The usual dose for the prevention of hypokalemia is 20 mEq per day. Doses of 40-100 mEq per day or more are used for the treatment of potassium depletion. K-Tab may interact with eplerenone, digoxin, quinidine, bronchodilators, ACE inhibitors, or diuretics. Tell your doctor all medications and supplements you use. During pregnancy, K-Tab should be used only if prescribed. This drug passes into breast milk. Consult your doctor before breastfeeding.

Our K-Tab (potassium chloride) Extended-Release Tablets Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

K-Tab Consumer Information

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

Stop using this medication and call your doctor at once if you have any of these serious side effects:

  • confusion, anxiety, feeling like you might pass out;
  • uneven heartbeat;
  • extreme thirst, increased urination;
  • leg discomfort;
  • muscle weakness or limp feeling;
  • numbness or tingly feeling in your hands or feet, or around your mouth;
  • severe stomach pain, ongoing diarrhea or vomiting;
  • black, bloody, or tarry stools; or
  • coughing up blood or vomit that looks like coffee grounds.

Less serious side effects may include:

  • mild nausea or upset stomach;
  • mild or occasional diarrhea;
  • slight tingling in your hands or feet; or
  • appearance of a potassium chloride tablet in your stool.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Read the entire detailed patient monograph for K-Tab (Potassium Chloride Extended-Release Tablets)

K-Tab Professional Information

SIDE EFFECTS

One of the most severe adverse effects is hyperkalemia (see CONTRAINDICATIONS, WARNINGS, and OVERDOSAGE). There also have been reports of upper and lower gastrointestinal conditions including obstruction, bleeding, ulceration, and perforation (see CONTRAINDICATIONS and WARNINGS).

The most common adverse reactions to oral potassium salts are nausea, vomiting, flatulence, abdominal pain/discomfort, and diarrhea. These symptoms are due to irritation of the gastrointestinal tract and are best managed by taking the dose with meals, or reducing the amount taken at one time.

Skin rash has been reported rarely.

Read the entire FDA prescribing information for K-Tab (Potassium Chloride Extended-Release Tablets)

Related Resources for K-Tab

Read the K-Tab User Reviews »

© K-Tab Patient Information is supplied by Cerner Multum, Inc. and K-Tab Consumer information is supplied by First Databank, Inc., used under license and subject to their respective copyrights.

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