Drug General Information (ID: DDI9M4PQUO)
  Drug Name Sulfisoxazole Drug Info Tolazamide Drug Info
  Drug Type Small molecule Small molecule
  Therapeutic Class Antiinfective Agents Antidiabetic Agents
  Structure

 Mechanism of Sulfisoxazole-Tolazamide Interaction (Severity Level: Moderate)
     Increased risk of hypoglycemia Click to Show/Hide Mechanism Graph
Could Not Find 2D Structure
      Drug Name Sulfisoxazole Tolazamide
      Mechanism Hypoglycemic effects Hypoglycemic effects
      Key Mechanism Factor 1
Factor Name Hypoglycemia
Factor Description Hypoglycemia is a condition in which your blood sugar (glucose) level is below the standard range. It causes irregular or rapid heartbeat, pale skin, numbness of the lips, tongue or cheeks, and sweating.
      Mechanism Description
  • Increased risk of hypoglycemia by the combination of Sulfisoxazole and Tolazamide 

Recommended Action
      Management Close monitoring for the development of hypoglycemia is recommended if these drugs are coadministered with insulin secretagogues, particularly in patients with advanced age and/or renal impairment. The oral antidiabetic dosage(s) may require adjustment if an interaction is suspected. Patients should be apprised of the signs and symptoms of hypoglycemia (e.g., headache, dizziness, drowsiness, nausea, hunger, tremor, weakness, sweating, palpitations), how to treat it, and to contact their doctor if it occurs. Patients should be observed for loss of glycemic control when these drugs are withdrawn.

References
1 Christensen LK, Hansen JM, Kristensen M "Sulphaphenazole-induced hypoglycemic attacks in tolbutamide-treated diabetics." Lancet 2 (1963): 1298-301. [PMID: 14071924]
2 Field JB, Ohta M, Boyle C, Remer A "Potentiation of acetohexamide hypoglycemia by phenylbutazone." N Engl J Med 277 (1967): 889-94. [PMID: 6061822]
3 Turtle JR, Burgess JA "Hypoglycemic action of fenfluramine in diabetes mellitus." Diabetes 22 (1973): 858-67. [PMID: 4749404]