Drug General Information (ID: DDIUEO1ZC8)
  Drug Name Foscarnet Drug Info Monopotassium phosphate Drug Info
  Drug Type Small molecule Small molecule
  Therapeutic Class Antiviral Agents Minerals And Electrolytes
  Structure

 Mechanism of Foscarnet-Monopotassium phosphate Interaction (Severity Level: Moderate)
     Increased risk of hypocalcemia Click to Show/Hide Mechanism Graph
Could Not Find 2D Structure
      Drug Name Foscarnet Monopotassium phosphate
      Mechanism Hypocalcemia Hypocalcemia
      Key Mechanism Factor 1
Factor Name Hypocalcemia
Factor Description Hypocalcemia is a low level of calcium found in a blood test. It can cause symptoms such as tingling, muscle cramps and heart rhythm problems that can range from mild to life-threatening.
      Mechanism Description
  • Increased risk of hypocalcemia by the combination of Foscarnet and Monopotassium phosphate 

Recommended Action
      Management Close monitoring is recommended during concomitant use of foscarnet with other drugs that are known to affect calcium concentrations. Serum creatinine and electrolyte levels should be assessed prior to initiating therapy and frequently during therapy. Patients should be advised to promptly notify their physician if they experience potential symptoms of hypocalcemia such as perioral tingling, numbness in extremities, and paresthesias.

References
1 Foscarnet: a review. Drugs 41 (1991): 106-29. [PMID: 1706982]
2 Product Information. Foscavir (foscarnet). Astra USA, Westborough, MA.
3 Youle M, Clarbour J, Gazzard B, Chanas A "Severe hypocalcemia in AIDS patients treated with foscarnet and pentamidine." Lancet 1 (1988): 1455-6. [PMID: 2898602]