The most common medications for a vaginal yeast infection are antifungal creams, suppositories, or a single oral pill. For a straightforward infection, you can pick up an over-the-counter antifungal at any pharmacy, or your doctor can prescribe a one-dose oral tablet. Both approaches work well, and the choice often comes down to personal preference.
Over-the-Counter Options
Three active ingredients dominate the pharmacy shelf for yeast infections: miconazole, clotrimazole, and tioconazole. You’ll find them sold under brand names like Monistat, Canesten, and Vagistat, but generic versions contain the same active ingredients and work identically. Each comes as a vaginal cream, ointment, or suppository (a small solid insert that dissolves inside the vagina). You apply one dose at bedtime, using the applicator included in the package.
These products come in different treatment lengths. Miconazole, for example, is available as a 1-day, 3-day, or 7-day course. The shorter treatments use a higher concentration of medication per dose, while the longer ones spread a lower concentration over more nights. Tioconazole is typically sold as a single-dose treatment. CDC treatment guidelines say all concentrations work equally well to clear the infection. Studies comparing 1-day and 7-day regimens head to head show the same outcomes from both an effectiveness and side-effect standpoint, so there’s no medical reason to prefer one length over another.
The most common side effect with any of these creams or suppositories is mild local burning or irritation right after application. This usually fades within minutes and doesn’t mean the treatment isn’t working.
The Prescription Pill: Fluconazole
Fluconazole is the go-to oral medication for yeast infections. For an uncomplicated infection, the standard treatment is a single 150 mg pill taken once. That’s it. Many people prefer this route because it’s simpler than inserting a cream or suppository for several nights, and it’s just as effective. You’ll need a prescription, but many providers will call one in after a phone visit if you’ve had yeast infections before and recognize the symptoms.
All antifungal medications used for yeast infections, whether topical or oral, belong to a drug class called azoles. They work by blocking a key step in the production of a molecule called ergosterol, which fungal cells need to build their outer membranes. Without ergosterol, the yeast’s membrane becomes unstable, toxic byproducts accumulate inside the cell, and the organism dies. Human cells don’t use ergosterol, which is why these drugs target the yeast without harming your own tissue.
Fluconazole does interact with a long list of other medications because it affects how your liver processes certain drugs. Notable interactions include blood thinners like warfarin, cholesterol medications like atorvastatin and simvastatin, some blood pressure and heart rhythm drugs, certain seizure medications, and opioid painkillers including fentanyl and methadone. If you take any prescription medications regularly, mention them when your provider prescribes fluconazole.
Prescription Creams
When over-the-counter options don’t resolve the infection, or when a provider suspects a less common yeast strain, a prescription-strength vaginal cream may be the next step. Terconazole is the most widely prescribed one. It comes in two strengths: a lower-concentration version used nightly for seven days, and a higher-concentration version used nightly for three days. There’s also a suppository form used for three nights. Like the OTC products, you apply it at bedtime with an applicator.
Terconazole can be a better fit for infections caused by yeast species other than the most common one (Candida albicans), which occasionally don’t respond as well to the drugstore options.
Treatment for Recurring Infections
If you get four or more yeast infections in a single year, that’s classified as recurrent vulvovaginal candidiasis, and a standard single dose of treatment won’t be enough to keep infections from coming back. The approach shifts to two phases: a longer initial treatment followed by months of maintenance.
For the initial phase, the CDC recommends either 7 to 14 days of a topical antifungal cream, or three oral doses of fluconazole spaced every other day (on days 1, 4, and 7). The goal is to fully eliminate the yeast before starting maintenance. Once the active infection clears, the maintenance phase involves taking a single oral fluconazole dose once a week for six months. This extended regimen significantly reduces the chance of another flare-up.
Boric Acid for Resistant Infections
When standard antifungals repeatedly fail, some providers recommend vaginal boric acid capsules as a second-line treatment. These aren’t commercially marketed the way antifungal creams are. You can buy them premade from some pharmacies, or make them yourself by filling size “0” gelatin capsules with boric acid powder (not crystals).
For an active infection, the typical regimen is one capsule inserted vaginally at bedtime every night for two weeks. To prevent recurrences afterward, some providers recommend continuing with two capsules per week (spaced a few days apart) for 6 to 12 months. Boric acid is particularly useful against yeast strains that don’t respond to azole medications. It should never be taken orally, as it’s toxic when swallowed.
Yeast Infection Treatment During Pregnancy
About 10% of pregnant women develop a vaginal yeast infection, and the treatment choice matters more during pregnancy than at any other time. Topical antifungal creams are the recommended first-line treatment. OTC options like miconazole and clotrimazole are considered safe during pregnancy.
Oral fluconazole is a different story. A large Danish study found that women who took even a single low dose of oral fluconazole during early pregnancy had roughly double the risk of miscarriage compared to women who weren’t exposed to the drug. At higher doses (150 mg or more) during the first trimester, that risk climbed even further, and there was also an increased risk of heart defects in newborns. The FDA advises caution with oral fluconazole during pregnancy, and most providers avoid prescribing it entirely for vaginal yeast infections in pregnant patients. If you’re pregnant and dealing with a yeast infection, a topical cream applied for seven days is the standard approach.