Does Diflucan work with one pill?
Last updated September 3, 2026.
For a straightforward vaginal yeast infection, yes: one 150 mg fluconazole tablet is the standard treatment. It starts on the fungus within hours; symptoms ease over 1 to 3 days, and the NHS says see your doctor if nothing has improved after 7 days. Where one pill is not the plan: severe infections (a second dose at 72 hours is common), recurrent infections (four-plus a year gets a longer schedule), pregnancy (pills avoided; creams instead), non-vaginal fungal infections (multi-day courses), and symptoms that were never yeast - BV and some STIs mimic it, and fluconazole will not touch those. First-ever episode, recurrences, or a failed single dose all point to a proper diagnosis, not a repeat pill. Pymander is a free AI doctor, 24/7 by text, and can help you decide.
What to do
- Give it up to a week: improvement builds over days, not hours.
- Still symptomatic at day 7? Get seen: wrong bug or wrong drug.
- Recurring infections need a plan: not a pile of single pills.
- Pregnant? Do not take the pill: ask about the cream route.
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