Drug General Information (ID: DDIV39A6KE)
  Drug Name Methazolamide Drug Info Licorice Drug Info
  Drug Type Small molecule Natural product
  Therapeutic Class Carbonic Anhydrase Inhibitors Herbal Products
  Structure

 Mechanism of Methazolamide-Licorice Interaction (Severity Level: Moderate)
     Increased risk of hypokalemia Click to Show/Hide Mechanism Graph
Could Not Find 2D Structure
      Drug Name Methazolamide Licorice
      Mechanism Hypokalemia Hypokalemia
      Key Mechanism Factor 1
Factor Name Hypokalemia
Factor Description Hypokalemia is a condition in which the amount of potassium in your blood is lower than normal. If you are mildly hypokalemic, you may not have any signs or symptoms, but severe hypokalemia may have the following symptoms: fatigue, constipation, frequent or heavy urination, muscle cramps or skin tingling, muscle weakness, and a fast or irregular heartbeat.
      Mechanism Description
  • Increased risk of hypokalemia by the combination of Methazolamide and Licorice 

Recommended Action
      Management Patients should consult a healthcare provider before taking any herbal or alternative medicine. In general, chronic use of licorice and licorice-containing products should be avoided in patients treated with potassium-depleting drugs. During concomitant use, patients should be advised to contact their physician if they experience signs and symptoms of hypokalemia such as fatigue, myalgia, muscle weakness, abdominal pain, hypoventilation, and irregular heartbeat.

References
1 Cumming AM, Boddy K, Brown JJ, et al "Severe hypokalaemia with paralysis induced by small doses of liquorice." Postgrad Med J 56 (1980): 526-9. [PMID: 7443613]
2 Edwards CR "Lessons from licorice." N Engl J Med 325 (1991): 1242-3. [PMID: 1656256]
3 Nielsen I, Pedersen RS "Life-threatening hypokalaemia caused by liquorice ingestion." Lancet 1 (1984): 1305. [PMID: 6145019]