Most yeast infections clear up within a few days using antifungal treatments available at any pharmacy without a prescription. The standard approach is a vaginal cream, ointment, or suppository used for 3 to 7 days. If that doesn’t work, a single-dose prescription pill is the next step. Here’s what to know about each option and how to keep infections from coming back.
Over-the-Counter Antifungal Treatments
Antifungal creams, ointments, and suppositories are the fastest path to relief for most people. Products containing miconazole (sold as Monistat) and terconazole are widely available and come in 1-day, 3-day, and 7-day formulations. The shorter courses use higher concentrations of the same active ingredient, so they’re not necessarily faster-acting. Many clinicians consider the 7-day course the most reliable, especially for a first infection.
You’ll typically notice itching and burning start to ease within the first day or two, but it’s important to finish the full course even if symptoms improve. Stopping early can leave enough yeast behind to trigger a rebound. Vaginal suppositories (small dissolvable tablets inserted with an applicator) tend to stay in place better than creams, though both work. Some kits include an external cream for vulvar itching, which can help with comfort while the internal treatment does its job.
Prescription Options
If OTC treatments haven’t worked, or if you’d rather skip the multi-day routine, a doctor can prescribe fluconazole. It’s a single 150 mg pill taken by mouth, and for many people that’s the entire treatment. Symptom relief usually takes 1 to 3 days, though the infection may take a bit longer to fully resolve.
Fluconazole is a good option when creams are inconvenient or when you’ve already tried OTC products without success. It does require a prescription because your doctor needs to confirm you’re actually dealing with a yeast infection and not something else (more on that below). For stubborn infections, a second dose a few days after the first is sometimes needed.
Make Sure It’s Actually a Yeast Infection
About two-thirds of people who self-diagnose a yeast infection are wrong. Bacterial vaginosis, the most commonly confused condition, has overlapping symptoms like irritation and unusual discharge but requires completely different treatment. Using antifungal products for BV won’t help and delays the care you need.
The key differences are in the discharge. Yeast infections produce thick, white, odorless discharge, sometimes with a white coating on the vulva and vaginal walls. Bacterial vaginosis produces thinner, grayish, foamy discharge with a noticeable fishy smell. Both can cause itching, burning, and discomfort during sex, so discharge characteristics are the most useful clue.
If you’ve never had a confirmed yeast infection before, or if your symptoms don’t match the classic pattern, getting tested before treating is worth the effort. A simple swab at a clinic takes minutes and removes the guesswork.
Why Yeast Infections Happen
Your vagina naturally contains both yeast and bacteria in a balanced ecosystem. A type of bacteria called Lactobacillus keeps the environment slightly acidic, which suppresses yeast growth. Anything that disrupts that bacterial population can tip the balance and let yeast multiply.
Antibiotics are the most common trigger. Broad-spectrum antibiotics wipe out harmful bacteria causing your illness, but they also destroy Lactobacillus. Without those protective bacteria, vaginal acidity drops and yeast has room to overgrow. This is why yeast infections so frequently follow a course of antibiotics for a sinus infection, UTI, or strep throat.
Other common triggers include hormonal shifts (pregnancy, birth control changes, the days before your period), elevated blood sugar from uncontrolled diabetes, and a weakened immune system. Moisture and heat also play a role, which is why infections are more common in summer or after long workouts in tight clothing.
Preventing Recurrence
A few straightforward habits reduce your risk. The CDC recommends wearing cotton underwear, choosing breathable clothing that isn’t too tight, and keeping the vulvar area clean and dry. Change out of wet swimsuits and sweaty workout clothes promptly. Avoid douches, scented tampons, and fragranced soaps in the vaginal area, all of which can disturb your natural bacterial balance.
Probiotics show genuine promise for prevention. A meta-analysis published in American Family Physician found that adding Lactobacillus-based probiotics to standard antifungal treatment improved short-term cure rates by 14% and reduced one-month relapse rates by 66%. In a controlled trial of women with recurrent infections, those who took an oral probiotic containing L. acidophilus and L. rhamnosus during and after treatment had dramatically lower recurrence: 29% relapsed over six months, compared to 100% in the group that used antifungals alone. Both oral and vaginal probiotic capsules showed benefit across studies. Taking a probiotic during and after antibiotic courses is a reasonable strategy if antibiotics are a known trigger for you.
When Infections Keep Coming Back
Some people deal with four or more yeast infections in a single year. This pattern, called recurrent vulvovaginal candidiasis, often requires a different approach than treating each episode individually. A doctor will typically start with a standard antifungal course to clear the active infection, then transition to a maintenance regimen to prevent the next one.
One option for recurrent infections is boric acid, a compound used as a vaginal suppository. CDC guidelines recommend 600 mg of boric acid in a gelatin capsule inserted vaginally once daily for 3 weeks when infections recur after standard treatment. Boric acid is not taken orally and should not be used during pregnancy.
Recurrent infections can also signal that a less common yeast species is involved. Most infections are caused by Candida albicans, which responds well to standard antifungals. But other species, particularly Candida glabrata, can be resistant to the usual medications. If your infections keep returning despite proper treatment, your doctor may order testing to identify the exact species and check which antifungals it responds to. This kind of targeted approach is becoming more important as antifungal resistance increases.
What to Expect During Treatment
With either OTC creams or prescription fluconazole, most people feel significantly better within 2 to 3 days. Complete resolution of symptoms typically takes up to a week. During treatment, you may notice some mild irritation from the medication itself, which is normal and temporary.
Avoid sexual intercourse until symptoms have fully resolved. Some vaginal antifungal products can weaken latex condoms and diaphragms, so check the product label if you use barrier contraception. If your symptoms haven’t improved after completing a full course of OTC treatment, that’s a clear signal to see a healthcare provider rather than starting a second round on your own. What feels like a stubborn yeast infection could be a different condition entirely, or a yeast strain that needs a different medication.