Drug General Information (ID: DDIDKHWL9G)
  Drug Name Amiloride Drug Info Monopotassium phosphate Drug Info
  Drug Type Small molecule Small molecule
  Therapeutic Class Diuretics Minerals And Electrolytes
  Structure

 Mechanism of Amiloride-Monopotassium phosphate Interaction (Severity Level: Major)
     Increased risk of hyperkalemia Click to Show/Hide Mechanism Graph
Could Not Find 2D Structure
      Drug Name Amiloride Monopotassium phosphate
      Mechanism Hyperkalemia Hyperkalemia
      Key Mechanism Factor 1
Factor Name Hyperkalemia
Factor Description Hyperkalemia is a condition in which the level of potassium in the blood is higher than normal. While mild cases may not produce symptoms, severe hyperkalemia can lead to fatal arrhythmias if left untreated.
      Mechanism Description
  • Increased risk of hyperkalemia by the combination of Amiloride and Monopotassium phosphate 

Recommended Action
      Management The use of potassium preparations in patients treated with potassium-sparing diuretics is generally not recommended. Caution is advised if coadministration is required, particularly in patients with renal impairment, diabetes, old age, worsening heart failure, and/or a risk for dehydration. Serum potassium and renal function should be checked regularly, and oral potassium supplementation should be avoided in patients with severe congestive heart failure who have serum potassium levels above 3.5 mEq/L. Patients should be advised to seek medical attention if they experience signs and symptoms of hyperkalemia such as weakness, listlessness, confusion, tingling of the extremities, and irregular heartbeat.

References
1 Shapiro S, Slone D, Lewis GP, Jick H "Fatal drug reactions among medical inpatients." JAMA 216 (1971): 467-72. [PMID: 5107928]
2 McNay JL, Oran E "Possible predisposition of diabetic patients to hyperkalemia following administration of potassium-retaining diuretic, amiloride (MK 870)." Metabolism 19 (1970): 58-70. [PMID: 5410663]
3 Walmsley RN, White GH, Cain M, McCarthy PJ, Booth J "Hyperkalemia in the elderly." Clin Chem 30 (1984): 1409-12. [PMID: 6744599]