Overview
11 DESCRIPTION Potassium Chloride Extended-Release Tablets, USP are a solid oral dosage form of potassium chloride. Each contains 600 mg or 750 mg of potassium chloride equivalent to 8 mEq or 10 mEq of potassium in a wax matrix tablet. Potassium Chloride Extended-Release Tablets, USP are an electrolyte replenisher. The chemical name is potassium chloride, and the structural formula is KCl.
Mechanism of Action
12 CLINICAL PHARMACOLOGY 12.1 Mechanism of Action The potassium ion is the principal intracellular cation of most body tissues. Potassium ions participate in a number of essential physiological processes including the maintenance of intracellular tonicity, the transmission of nerve impulses, the contraction of cardiac, skeletal and smooth muscle and the maintenance of normal renal function. The intracellular concentration of potassium is approximately 150 to 160 mEq per liter. The normal adult plasma concentration is 3.5 to 5 mEq per liter. An active ion transport system maintains this gradient across the plasma membrane.
Indications
- 1 INDICATIONS AND USAGE Potassium Chloride Extended-Release Tablets are indicated for the treatment and prophylaxis of hypokalemia with or without metabolic alkalosis, in patients for whom dietary management with potassium-rich foods or diuretic dose reduction is insufficient. Potassium Chloride Extended-Release Tablets are a potassium salt, indicated for the treatment and prophylaxis of hypokalemia with or without metabolic alkalosis in patients for whom dietary management with potassium-rich foods or diuretic dose reduction is insufficient. (1)
Common Doses
- Refer to label
Dosage
2 DOSAGE AND ADMINISTRATION Monitor serum potassium and adjust dosages accordingly (2.1) If serum potassium is less than 2.5 mEq/L, use intravenous potassium instead of oral supplementation (2.1) Take with meals and with a glass of water or other liquid. Swallow tablets whole without crushing, chewing or sucking. (2.1) Treatment of hypokalemia : Doses range from 40 to 100 mEq/day in divided doses. Limit doses to 40 mEq per dose. (2.2) Prevention of hypokalemia : Typical dose is 20 mEq per day. (2.2) 2.1 Administration and Monitoring If serum potassium concentration is less than 2.
Contraindications
- 4 CONTRAINDICATIONS Potassium chloride is contraindicated in patients on triamterene and amiloride. Concomitant use with triamterene and amiloride (4)
Side Effects
- 6 ADVERSE REACTIONS The most common adverse reactions are nausea, vomiting, flatulence, abdominal pain/discomfort and diarrhea. (6) To report SUSPECTED ADVERSE REACTIONS, contact Epic Pharma, LLC at 1-888-374-2791 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch The following adverse reactions have been identified with use of oral potassium salts. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure.
Interactions
- 7 DRUG INTERACTIONS Triamterene and amiloride: Concomitant use is contraindicated (7.1) Renin-angiotensin-aldosterone inhibitors: Monitor for hyperkalemia (7.2) Nonsteroidal anti-inflammatory drugs: Monitor for hyperkalemia (7.3) 7.1 Triamterene or amiloride Use with triamterene or amiloride can produce severe hyperkalemia. Concomitant use is contraindicated [see Contraindications (4) ]. 7.2 Renin-angiotensin-aldosterone Inhibitors Drugs that inhibit the renin-angiotensin-aldosterone system (RAAS) including angiotensin converting enzyme (ACE) inhibitors, angiotensin receptor blockers (ARBs),...