Drug General Information (ID: DDIRYZLJ71)
  Drug Name Triamterene Drug Info Licorice Drug Info
  Drug Type Small molecule Natural product
  Therapeutic Class Diuretics Herbal Products
  Structure

 Mechanism of Triamterene-Licorice Interaction (Severity Level: Moderate)
     Antagonize the effect of antihypertensive agents Click to Show/Hide Mechanism Graph
Could Not Find 2D Structure
      Drug Name Triamterene Licorice
      Mechanism Antihypertensive agent
Amiloride-sensitive sodium channel  Blocker
Hypertensive effects
Mineralocorticoid and renin-suppressing effects 
      Key Mechanism Factor 1
Factor Name Amiloride-sensitive sodium channel Structure Sequence
Protein Family Amiloride-sensitive sodium channel (TC 1.A.6) family
Protein Function
Sodium permeable non-voltage-sensitive ion channel inhibited by the diuretic amiloride. Mediates the electrodiffusion of the luminal sodium (and water, which follows osmotically) through the apical membrane of epithelial cells. Plays an essential role in electrolyte and blood pressure homeostasis, but also in airway surface liquid homeostasis, which is important for proper clearance of mucus. Controls the reabsorption of sodium in kidney, colon, lung and eccrine sweat glands. Also plays a role in taste perception.
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      Mechanism Description
  • Antagonize the effect of Triamterene when combined with Licorice 

Recommended Action
      Management Patients receiving antihypertensive therapy should avoid or limit the consumption of licorice-containing products. Even relatively moderate doses of licorice may be problematic in susceptible patients when ingested regularly for prolonged periods.

References
1 Stewart PM, Wallace AM, Valentino R, Burt D, Shackleton CH, Edwards CR "Mineralocorticoid activity of liquorice: 11-beta-hydroxysteroid dehydrogenase deficiency comes of age." Lancet 2 (1987): 821-4. [PMID: 2889032]
2 Cumming AM "Metabolic effects of licorice." Br Med J 1 (1977): 906
3 Epstein MT, Espiner EA, Donald RA, Hughes H "Effect of eating liquorice on the renin-angiotensin aldosterone axis in normal subjects." Br Med J 1 (1977): 488-90