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Diflucan (fluconazole) Disease Interactions

There are 4 disease interactions with Diflucan (fluconazole):


Fluconazole (Includes Diflucan) ↔ Hepatotoxicity

Severe Potential Hazard, Low plausibility

Applies to: Liver Disease

The use of fluconazole has been rarely associated with hepatotoxicity. Reversible idiosyncratic hepatitis, cholestasis and fatal fulminant hepatic failure have been reported, the latter occurring primarily in patients with serious underlying medical conditions and taking multiple concomitant medications. Liver function tests should be performed periodically in patients with preexisting hepatic abnormalities, particularly during prolonged therapy. Treatment should be withdrawn if persistent elevations or worsening of liver enzyme levels occur.


  1. Munoz P, Moreno S, Berenguer J, et al "Fluconazole-related hepatotoxicity in patients with acquired immunodeficiency syndrome." Arch Intern Med 151 (1991): 1020-1
  2. Holechek MJ "Medication review: fluconazole." ANNA J 18 (1991): 585-6
  3. Franklin IM, Elias E, Hirsch C "Fluconazole-induced jaundice." Lancet 336 (1990): 565
  4. Wells C, Lever AM "Dose-dependent fluconazole hepatotoxicity proven on biopsy and rechallenge ." J Infect 24 (1992): 111-2
  5. "Product Information. Diflucan (fluconazole)." Roerig Division, New York, NY.
  6. Gearhart MO "Worsening of liver function with fluconazole and review of azole antifungal hepatotoxicity." Ann Pharmacother 28 (1994): 1177-81
  7. Guillaume MP, Deprez C, Cogan E "Subacute mitochondrial liver disease in a patient with AIDS: possible relationship to prolonged fluconazole administration." Am J Gastroenterol 91 (1996): 165-8
  8. Grant SM, Clissold SP "Fluconazole: a review of its pharmacodynamic and pharmacokinetic properties, and therapeutic potential in superficial and systemic mycoses." Drugs 39 (1990): 877-916
  9. Jacobson MA, Hanks DK, Ferrell LD "Fatal acute hepatic necrosis due to fluconazole." Am J Med 96 (1994): 188-90
  10. Ruhnke M, Yeates RA, Pfaff G, Sarnow E, Hartmann A, Trautmann M "Single-dose pharmacokinetics of fluconazole in patients with liver cirrhosis." J Antimicrob Chemother 35 (1995): 641-7
View all 10 references

Azole Antifungals (Includes Diflucan) ↔ Qt Prolongation

Moderate Potential Hazard, Moderate plausibility

Applies to: Arrhythmias

Most of the azole antifungals have been associated with prolongation of the QT interval. There have been postmarketing rare reports of QT prolongation, and torsade de pointes usually involving patients with risk factors such as structural heart disease, electrolyte abnormalities, and concomitant medications. These drugs should be administered with caution to patients with potentially proarrhythmic conditions. Concomitant use with other medications that have potential to increase the risk of cardiotoxicity should be avoided.


Fluconazole (Includes Diflucan) ↔ Hemodialysis

Moderate Potential Hazard, High plausibility

Applies to: hemodialysis

Fluconazole is substantially removed by hemodialysis. Plasma levels of fluconazole has been shown to reduce by 50% following 3 hours of dialysis. Fluconazole should be administered after hemodialysis.


  1. "Product Information. Diflucan (fluconazole)." Roerig Division, New York, NY.
  2. Oono S, Tabei K, Tetsuka T, Asano Y "The pharmacokinetics of fluconazole during haemodialysis in uraemic patients." Eur J Clin Pharmacol 42 (1992): 667-70
  3. Toon S, Ross CE, Gokal R, Rowland M "An assessment of the effects of impaired renal function and haemodialysis on the pharmacokinetics of fluconazole." Br J Clin Pharmacol 29 (1990): 221-6

Fluconazole (Includes Diflucan) ↔ Renal Dysfunction

Moderate Potential Hazard, High plausibility

Applies to: Renal Dysfunction

Fluconazole is primarily eliminated by the kidney. Patients with renal impairment may be at greater risk for adverse effects from fluconazole due to decreased drug clearance. Dosage adjustments are recommended for patients with moderate to severe renal impairment (CrCl <= 50 mL/min) receiving multiple doses of the drug.


  1. Debruyne D, Ryckelynck JP "Clinical pharmacokinetics of fluconazole." Clin Pharmacokinet 24 (1993): 10-27
  2. Toon S, Ross CE, Gokal R, Rowland M "An assessment of the effects of impaired renal function and haemodialysis on the pharmacokinetics of fluconazole." Br J Clin Pharmacol 29 (1990): 221-6
  3. "Product Information. Diflucan (fluconazole)." Roerig Division, New York, NY.

Diflucan (fluconazole) drug Interactions

There are 699 drug interactions with Diflucan (fluconazole)

Drug Interaction Classification

The classifications below are a general guideline only. It is difficult to determine the relevance of a particular drug interaction to any individual given the large number of variables.
Major Highly clinically significant. Avoid combinations; the risk of the interaction outweighs the benefit.
Moderate Moderately clinically significant. Usually avoid combinations; use it only under special circumstances.
Minor Minimally clinically significant. Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan.
Unknown No information available.

Do not stop taking any medications without consulting your healthcare provider.

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