Details of Drug Interaction

Details of Drug-Drug Interaction

 Drug General Information (ID: DDIIWJTUPX)
  Drug Name Minoxidil Drug Info Licorice Drug Info
  Drug Type Small molecule Natural product
  Therapeutic Class Antihypertensive Agents Herbal Products
  Structure

 Mechanism of Minoxidil-Licorice Interaction (Severity Level: Moderate)
     Antagonize the effect of antihypertensive agents Click to Show/Hide Mechanism Graph
Could Not Find 2D Structure
      Drug Name Minoxidil Licorice
      Mechanism Antihypertensive agent
ATP-sensitive inward rectifier potassium channel  Inducer 		Hypertensive effects
Mineralocorticoid and renin-suppressing effects 
      Key Mechanism Factor 1
Factor Name Inward rectifier potassium channel Structure Sequence
Protein Family Inward rectifier-type potassium channel (TC 1.A.2.1) family
Protein Function
This receptor is controlled by G proteins. Inward rectifier potassium channels are characterized by a greater tendency to allow potassium to flow into the cell rather than out of it. Their voltage dependence is regulated by the concentration of extracellular potassium; as external potassium is raised, the voltage range of the channel opening shifts to more positive voltages. The inward rectification is mainly due to the blockage of outward current by internal magnesium. Can be blocked by extracellular barium (By similarity). Subunit of ATP-sensitive potassium channels (KATP). Can form cardiac and smooth muscle-type KATP channels with ABCC9. KCNJ11 forms the channel pore while ABCC9 is required for activation and regulation.
    Click to Show/Hide
      Mechanism Description
  • Antagonize the effect of Minoxidil 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