Antifungal medications kill yeast infections, and most uncomplicated infections clear within three to seven days of treatment. You can treat a standard vaginal yeast infection with over-the-counter creams or suppositories, a single prescription pill, or in stubborn cases, newer drugs that work through a completely different mechanism. The right choice depends on how severe your symptoms are, whether you’ve had recurring infections, and whether you’re pregnant.
How Antifungals Kill Yeast
The yeast responsible for most vaginal infections, Candida albicans, builds its cell membranes from a fatty substance called ergosterol. Antifungal drugs in the azole family block an enzyme the yeast needs to produce ergosterol, which destabilizes the membrane and kills the cell. This is how nearly every common yeast infection treatment works, from the miconazole cream you buy at a pharmacy to the fluconazole pill a doctor prescribes.
A newer class of antifungal works differently. Instead of targeting the cell membrane, it attacks the cell wall by blocking the production of a structural sugar called glucan. This matters because it means the drug still works against yeast strains that have become resistant to standard azole treatments.
Over-the-Counter Treatments
For a straightforward yeast infection, OTC options are effective and widely available. The two most common active ingredients are miconazole and clotrimazole, both sold as vaginal creams or suppositories. You’ll find them packaged as 1-day, 3-day, or 7-day regimens. The difference is concentration: shorter courses use a higher dose per application, while longer courses spread a lower dose over more days. All reach the same total amount of medication.
The CDC lists these as recommended first-line options:
- Miconazole: Available as a 2% or 4% cream, or as suppositories in 100 mg (7-day), 200 mg (3-day), or 1,200 mg (1-day) strengths
- Clotrimazole: Available as a 1% cream (7 to 14 days) or 2% cream (3 days)
- Tioconazole: A single-application 6.5% ointment
Shorter regimens are more convenient, but if your symptoms are moderate to severe, a 7-day course tends to be more reliable. Most people notice improvement within two to three days, with full resolution by the end of the treatment course.
Prescription Options
The most common prescription treatment is a single 150 mg oral dose of fluconazole. It’s popular because swallowing one pill is simpler than using a vaginal cream for several days. For severe infections with intense swelling, redness, or cracking, the CDC recommends either a 7-to-14-day course of topical azole therapy or two doses of fluconazole taken 72 hours apart.
Prescription vaginal creams and suppositories also exist. Terconazole and butoconazole are the main ones, and a doctor might choose these when OTC products haven’t worked or when there’s a reason to avoid oral medication.
For Infections That Keep Coming Back
Recurrent yeast infections, defined as four or more episodes in a year, need a longer strategy. The initial treatment phase is more aggressive: either 7 to 14 days of topical antifungal or three doses of oral fluconazole spread over a week (taken on days 1, 4, and 7). Once that clears the active infection, a weekly dose of fluconazole for six months helps prevent recurrence. This maintenance phase is important because without it, the yeast tends to bounce back quickly.
For Resistant Strains
Some yeast infections are caused by non-albicans species like Candida glabrata, which don’t respond well to fluconazole. For these cases, a longer course (7 to 14 days) of a different azole is typically the first step. If that fails, boric acid vaginal suppositories, 600 mg inserted once daily for three weeks, are the standard backup. Boric acid creates an acidic environment that most Candida species can’t tolerate.
For people dealing with azole-resistant infections, a newer prescription drug called ibrexafungerp (brand name Brexafemme) offers a genuinely different approach. Because it attacks the fungal cell wall rather than the cell membrane, it retains activity against most fluconazole-resistant Candida species. The FDA approved it specifically for vaginal yeast infections, and it doesn’t interfere with azole or other antifungal medications if you’re using them simultaneously.
Treatment During Pregnancy
If you’re pregnant, only topical azole treatments applied for seven days are recommended. Oral fluconazole is off the table entirely. Studies have linked even a single 150 mg dose to an increased risk of spontaneous abortion and congenital anomalies. Stick with a 7-day miconazole or clotrimazole cream and talk to your OB-GYN before starting treatment.
What About Probiotics?
Probiotics don’t treat an active yeast infection the way antifungal medications do, but certain strains of Lactobacillus play a real role in keeping Candida in check. The best-studied strain, Lactobacillus rhamnosus GG, fights yeast through several mechanisms. It produces lactic acid and hydrogen peroxide that make the vaginal environment hostile to Candida. It also secretes sugar-coated molecules that physically block yeast from sticking to the vaginal lining. Perhaps most interesting, it produces a protein with chitinase activity, meaning it can break down chitin in the yeast’s cell wall, reducing both yeast growth and the ability of Candida to shift into its more aggressive, thread-like hyphal form.
These effects are well documented in lab studies, and the biology makes sense. But probiotics work slowly and are better suited for prevention than for clearing an infection that’s already causing symptoms. If you get recurrent infections, adding a Lactobacillus-containing probiotic alongside your antifungal treatment is reasonable, but it shouldn’t replace the antifungal.
Tea Tree Oil and Other Home Remedies
Tea tree oil has antifungal properties in lab settings, but translating that to safe, effective use for vaginal yeast infections is a different story. The oil can cause skin irritation, allergic rashes, and itching, all of which would make a yeast infection feel worse. It should never be swallowed, as even small amounts are toxic. There’s no established safe concentration for vaginal use, and no clinical guidelines recommend it.
Other commonly mentioned remedies like coconut oil, garlic, and apple cider vinegar lack meaningful clinical evidence. Some can disrupt the vaginal pH or cause irritation. When effective, affordable antifungal treatments are available over the counter, there’s little reason to experiment with unproven alternatives.
How Long Recovery Takes
Most uncomplicated yeast infections resolve within three to seven days of starting antifungal treatment. You’ll typically feel some relief from itching and burning within the first day or two, but it’s important to finish the full course even if symptoms improve early. Stopping treatment prematurely can leave enough yeast alive to cause a rebound infection.
Severe or recurrent infections take longer. A two-week initial treatment followed by six months of weekly maintenance is the standard timeline for recurrent cases. If your symptoms haven’t improved after a full OTC course, or if you’re getting infections more than three times a year, the infection may involve a resistant Candida species that requires a culture to identify and a different treatment to clear.