Hyperkalemia & cardiac arrest in patients w/ impaired mechanisms for excreting K. Potentially fatal hyperkalemia can develop rapidly & be asymptomatic. Avoid use in patients w/ chronic renal failure, or other condition which impairs K excretion eg, severe myocardial damage or heart failure. Discontinue immediately & investigate possibility of bowel perforation or obstruction if there is severe vomiting, abdominal pain or GI bleeding. Use 24 hr urinary citrate &/or pH measurements to determine adequacy of initial dosage & to evaluate effectiveness of any dosage change. Measure urinary citrate &/or pH every 4 mth. Pregnancy & lactation.
Citrapos Avoid concomitant administration w/ K-sparing diuretic (eg, triamterene, spironolactone or amiloride). Patient taking both diuretics & digitalis prep, or having trouble swallowing tab or if tab sticks in throat, tarry stools or other evidence of GI bleeding. Childn.
Citrapos XR Closely monitor for signs of hyperkalemia w/ periodic blood tests & ECG. Reports of upper GI mucosal lesions.