Drug General Information (ID: DDILAJ7N5O)
  Drug Name Acetazolamide Drug Info Quinidine Drug Info
  Drug Type Small molecule Small molecule
  Therapeutic Class Anticonvulsants Group I Antiarrhythmics
  Structure

 Mechanism of Acetazolamide-Quinidine Interaction (Severity Level: Moderate)
     Altered urine pH Click to Show/Hide Mechanism Graph
Could Not Find 2D Structure
      Drug Name Acetazolamide Quinidine
      Mechanism Urine alkalinizer Urine pH sensitive
      Key Mechanism Factor 1
Factor Name Urine pH
Factor Description The normal range of urine pH is between 4.5 and 8, depending mainly on the hydrogen ion concentration. Changes in urine pH may significantly affect drug reabsorption and excretion.
      Mechanism Description
  • Altered elimination of Quinidine caused by Acetazolamide mediated altered urine pH

Recommended Action
      Management Caution is advised if quinidine is used with agents that can increase urinary pH. Quinidine levels may need to be monitored more closely following addition or discontinuation of these agents, and the quinidine dosage adjusted as necessary. Patients should be advised to seek medical attention if they experience symptoms that could indicate quinidine toxicity such as tinnitus, hearing loss, visual disturbances, diarrhea, headache, dizziness, palpitations, syncope, or irregular heartbeats.

References
1 Ace LN, Jaffe JM, Kunka RL "Effect of food and an antacid on quinidine bioavailability." Biopharm Drug Dispos 4 (1983): 183-90. [PMID: 6882885]
2 Romankiewicz JA, Reidenberg M, Drayer D, Franklin JE "The noninterference of aluminum hydroxide gel with quinidine sulfate absorption: An approach to control quinidine-induced diarrhea." Am Heart J 96 (1978): 518-20
3 Mauro VF, Mauro LS, Fraker TD Jr, Temesy-Armos PN, Somani P "Effect of aluminum hydroxide gel on quinidine gluconate absorption." DICP 24 (1990): 252-4