(Generic versions may still be available.)
BECAUSE OF REPORTS OF INTESTINAL AND GASTRIC ULCERATION AND BLEEDING WITH CONTROLLED-RELEASE POTASSIUM CHLORIDE PREPARATIONS, THESE DRUGS SHOULD BE RESERVED FOR THOSE PATIENTS WHO CANNOT TOLERATE OR REFUSE TO TAKE LIQUID OR EFFERVESCENT POTASSIUM PREPARATIONS OR FOR PATIENTS IN WHOM THERE IS A PROBLEM OF COMPLIANCE WITH THESE PREPARATIONS.
- For the treatment of patients with hypokalemia with or without metabolic alkalosis, in digitalis intoxications, and in patients with hypokalemic familial periodic paralysis. If hypokalemia is the result of diuretic therapy, consideration should be given to the use of a lower dose of diuretic, which may be sufficient without leading to hypokalemia.
- For the prevention of hypokalemia in patients who would be at particular risk if hypokalemia were to develop e.g., digitalized patients or patients with significant cardiac arrhythmias, hepatic cirrhosis with ascites, states of aldosterone excess with normal renal function, potassium-losing nephropathy, and certain diarrheal states.
The use of potassium salts in patients receiving diuretics for uncomplicated essential hypertension is often unnecessary when such patients have a normal dietary pattern and when low doses of the diuretic are used. Serum potassium should be checked periodically, however, and if hypokalemia occurs, dietary supplementation with potassium-containing foods may be adequate to control milder cases. In more severe cases, and if dose adjustment of the diuretic is ineffective or unwarranted, supplementation with potassium salts may be indicated.
DOSAGE AND ADMINISTRATION
The usual dietary intake of potassium by the average adult is 50 to 100 mEq per day. Potassium depletion sufficient to cause hypokalemia usually requires the loss of 200 or more mEq of potassium from the total body store.
Dosage must be adjusted to the individual needs of each patients. The dose for the prevention of hypokalemia is typically in the range of 20 mEq per day. Doses of 40 to 100 mEq per day or more are used for the treatment of potassium depletion. Dosage should be divided if more than 20 mEq per day is given such that no more than 20 mEq is given in a single dose. Because of the potential for gastric irritation (see WARNINGS), Micro-K (potassium chloride extended-release) ® Extencaps® should be taken with meals and with a full glass of water or other liquid.
Patients who have difficulty swallowing capsules may sprinkle the contents of the capsule onto a spoonful of soft food. The soft food, such as applesauce or pudding, should be swallowed immediately without chewing and followed with a glass of cool water or juice to ensure complete swallowing of the microcapsules. The food used should not be hot and should be soft enough to be swallowed without chewing. Any microcapsule/food mixture should be used immediately and not stored for future use.
Micro-K (potassium chloride extended-release) ® Extencaps® are pale orange capsules monogrammed Micro-K (potassium chloride extended-release) ® and "Ther-Rx"/ "010" , each containing 600 mg microencapsulated potassium chloride (equivalent to 8 mEq K) in bottles of 100 (NDC 64011-010-04), 500 (NDC 64011-010-08) and Dis-Co® unit dose packs of 100 (NDC 64011-010-11).
Micro-K (potassium chloride extended-release) ® 10 Extencaps® are pale orange and opaque white capsules monogrammed Micro-K (potassium chloride extended-release) ® 10 and "Ther-Rx"/"009", each containing 750 mg microencapsulated potassium chloride (equivalent to 10 mEq K) in bottles of 100 (NDC 64011-009-04), 100 Unit-of-Use (NDC 64011-009-21), bottles of 500 (NDC 64011-009-08), and Dis-Co® unit dose packs of 100 (NDC 64011-009-11).
Store at controlled room temperature, between 20° C and 25° C (68° F and 77° F).
Dispense in tight container.
Manufactured by KV Pharmaceutical
for Ther-Rx Corporation., St. Louis, MO 63045
FDA rev date: 8/20/2003
Last reviewed on RxList: 6/19/2007
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