The most common prescription for a yeast infection is a single 150-mg oral dose of fluconazole, a pill that kills the fungus causing the infection. For most uncomplicated cases, that one pill is the entire treatment. But depending on how severe or frequent your infections are, your provider may prescribe a topical cream, a longer course of medication, or a newer class of antifungal altogether.
The Standard Prescription: Fluconazole
Fluconazole is the go-to oral prescription for straightforward yeast infections. You take a single 150-mg tablet and wait. Most people notice symptom relief within a few days, though it can take up to a week for the infection to fully clear. In clinical studies, a single dose achieved a clinical cure or improvement rate of about 96% by day 28, with complete fungal eradication in roughly 86% of patients.
The appeal is obvious: one pill, no messy creams, no multi-day regimen. It works systemically, meaning it travels through your bloodstream to reach the infection rather than being applied directly to the area. For a first-time or occasional yeast infection, this is typically all you need.
Prescription Creams and Suppositories
When oral medication isn’t the right fit, or when a provider wants a targeted approach, prescription-strength vaginal creams and suppositories are the alternative. These are different from the over-the-counter options you can buy at a pharmacy. The two main prescription topicals are terconazole and butoconazole, both applied vaginally at bedtime.
- Terconazole cream comes in two strengths. The lower concentration (0.4%) is used nightly for 7 days. The higher concentration (0.8%) is used nightly for 3 days. It also comes as a suppository, inserted once daily at bedtime for 3 nights.
- Butoconazole 2% cream is a single-application treatment. One dose of a bioadhesive cream is applied once, and it stays in place to work over several days.
These prescription topicals tend to be used when someone can’t take oral fluconazole, prefers a localized treatment, or has a type of yeast that responds better to a different antifungal. Antifungal creams generally clear an infection within 3 to 7 days.
Treatment During Pregnancy
Pregnancy changes the equation significantly. Only topical antifungal creams, applied for 7 days, are recommended for pregnant women. Oral fluconazole is not considered safe during pregnancy, particularly in the first trimester. A large population-based study published in The BMJ found that fluconazole use in early pregnancy was associated with a small but real increase in musculoskeletal malformations, roughly 52 cases per 10,000 exposed pregnancies compared to 37 per 10,000 with topical treatment. The risk was highest at cumulative doses above 450 mg, but even a single 150-mg dose showed a slightly elevated risk.
If you’re pregnant or think you might be, topical azole creams are the standard of care. They absorb minimally into the bloodstream, which is why they’re considered safe.
Severe or Complicated Infections
Not all yeast infections are mild. If you have significant swelling, cracking skin, or widespread irritation, your provider will likely treat it more aggressively. For severe infections, the CDC guidelines recommend either 7 to 14 days of a topical antifungal or two oral doses of fluconazole spaced 72 hours apart.
People with poorly controlled diabetes, weakened immune systems, or those on immunosuppressive medications also fall into the “complicated” category. These infections tend to be stubborn and typically require a longer treatment course of 7 to 14 days regardless of the medication used.
Recurrent Yeast Infections
If you’re dealing with three or more yeast infections in a single year, you have what’s classified as recurrent vulvovaginal candidiasis. The treatment strategy here is a two-phase approach: knock out the current infection, then prevent the next one.
The initial phase is more intensive than a standard prescription. Your provider may recommend 7 to 14 days of topical treatment, or three oral doses of fluconazole taken on days 1, 4, and 7. The goal is to fully eliminate the fungus before moving to maintenance. The second phase is a weekly dose of oral fluconazole for 6 months. This long-term suppressive therapy keeps yeast levels low enough to prevent flare-ups from taking hold.
When the Usual Treatments Don’t Work
Most yeast infections are caused by Candida albicans, which responds well to standard antifungals. But some infections are caused by other species, particularly Candida glabrata, which can be resistant to fluconazole. For these cases, providers typically prescribe a longer course (7 to 14 days) of a non-fluconazole antifungal cream or suppository.
If that doesn’t work, boric acid vaginal suppositories are the next step. These are gelatin capsules filled with 600 mg of boric acid powder, inserted vaginally once nightly. For a current infection with a resistant strain, the typical course is 2 to 3 weeks. Boric acid is not available as a standard pharmacy prescription in most cases. Your provider will give you specific instructions on how to obtain and use it. It should never be taken orally.
Newer Prescription Options
Ibrexafungerp is a newer oral antifungal that works through a different mechanism than fluconazole. Instead of belonging to the azole class that has been the backbone of yeast infection treatment for decades, it targets the fungal cell wall directly. It’s approved for adults and adolescents who have started menstruating.
The dosing is two tablets taken twice in one day, about 12 hours apart. It offers an alternative for people who haven’t responded well to azole-based treatments or who have infections caused by resistant yeast strains. One important caveat: ibrexafungerp can cause harm during pregnancy. If you’re of reproductive age, your provider will confirm you’re not pregnant before prescribing it, and effective birth control is required during and shortly after treatment.
Prescription vs. Over-the-Counter
Several antifungal creams, like miconazole and clotrimazole, are available without a prescription in 1-day, 3-day, and 7-day formulations. These work well for many uncomplicated infections. The main reasons a provider would write a prescription instead are convenience (a single pill versus days of cream), a history of infections that haven’t responded to OTC options, uncertainty about whether the symptoms are actually a yeast infection, or a situation that qualifies as complicated.
If you’ve never had a yeast infection before, or your symptoms are different from past infections, getting a proper diagnosis matters. Bacterial vaginosis and certain sexually transmitted infections can mimic yeast infection symptoms, and using the wrong treatment delays relief.