How to Take Fluconazole 100 mg
Take fluconazole 100 mg orally once daily, with or without food, as the medication is rapidly and almost completely absorbed regardless of meals 1.
Administration Details
Oral administration is straightforward:
- Swallow the tablet whole with water
- Can be taken with or without food—absorption is not affected 1
- Take at approximately the same time each day for consistency
Dosing Context
The 100 mg dose is commonly used for several indications 2:
- Oropharyngeal candidiasis (moderate-severe): 100-200 mg daily for 7-14 days 2
- Chronic suppressive therapy for recurrent infections: 100 mg three times weekly 2
- After initial loading dose: Many treatment regimens start with a 200 mg loading dose on day 1, followed by 100 mg daily 1
Important Considerations
Timing and duration matter:
- If prescribed for acute infection, continue for the full prescribed duration even if symptoms improve
- For oropharyngeal candidiasis, treatment should continue for at least 2 weeks to decrease relapse likelihood 1
- Clinical evidence typically shows improvement within several days, but premature discontinuation can lead to recurrence 1
Drug interactions to be aware of:
- Fluconazole can interact with warfarin (increases bleeding risk), phenytoin, cyclosporine, and oral contraceptives 1
- Rifampin decreases fluconazole effectiveness 1
- Antacids (like Maalox) do not affect absorption and can be taken together 1
Renal function:
- If you have kidney problems, your doctor may need to adjust your dose, as fluconazole is eliminated primarily through the kidneys 1
Missed dose:
- Take as soon as you remember, but if it's almost time for the next dose, skip the missed dose—do not double up
The medication has a long half-life (31-37 hours), which allows for once-daily dosing and provides sustained antifungal activity 3, 4.