Can Diflucan (Fluconazole) Tablets Be Crushed?
Yes, Diflucan (fluconazole) tablets can be safely crushed for administration, with excellent bioavailability maintained even when crushed and given via feeding tubes with or without enteral feeds.
Evidence Supporting Crushing
Bioavailability Studies in Critical Care Settings
Crushing fluconazole tablets and administering them via feeding tubes maintains 97.2% bioavailability in intensive care unit patients with concomitant enteral feeding, demonstrating virtually complete absorption comparable to intravenous administration 1.
A second study in surgical ICU patients showed 77% relative bioavailability when crushed tablets were dissolved and given via nasogastric or feeding tubes, with peak concentrations occurring within 2 hours 2.
The pharmacokinetic parameters (AUC, elimination rate constant, and terminal half-life) did not differ significantly between crushed enteral administration and IV dosing 2.
Practical Administration Considerations
When crushing is appropriate:
- Patients with dysphagia who cannot swallow intact tablets
- Patients receiving enteral nutrition via feeding tubes
- Critically ill patients with normal gastrointestinal motility 1
Crushing technique:
- The tablet should be crushed and dissolved in water or appropriate liquid vehicle
- Can be mixed with soft food (such as applesauce) for easier administration 1, 2
- Flush through feeding tube if using enteral access
- Administer promptly after crushing to prevent degradation 3
Important Caveats
When NOT to Crush
While fluconazole tablets can be crushed, general principles about crushing medications must be considered 4, 5:
- Extended-release formulations should never be crushed (not applicable to standard fluconazole tablets)
- Gastro-resistant coatings would be compromised by crushing (not applicable to fluconazole)
- The standard Diflucan tablets contain no special coating that would be compromised 6
Safety for Healthcare Workers
- Healthcare workers crushing tablets may be exposed to drug particles 4
- For fluconazole specifically, this is not a major concern as it is not classified as hazardous, unlike some chemotherapeutic or teratogenic agents 4
Alternative Formulations
Consider using the oral suspension formulation instead of crushing tablets when long-term administration is needed 6:
- Available in 10 mg/mL and 40 mg/mL concentrations
- Eliminates need for crushing
- Easier to administer precise doses, especially in pediatric patients
- Must be shaken well before use and stored properly (between 5°C and 30°C) 6
Clinical Implications
Cost considerations favor crushed tablet administration:
- Enteral administration of crushed fluconazole costs approximately 10% of IV administration 2
- Reduces risk of catheter-related infections from indwelling IV lines 1
- Allows earlier transition from IV to oral therapy in appropriate patients
Absorption is not affected by food, so crushed fluconazole can be given with or without meals, making administration flexible 6.