Bacterial vaginosis is the most common vaginal infection in women of reproductive age, and it has a frustrating tendency to come back even after treatment. While prescription antibiotics remain the most effective way to clear BV, several home strategies can help manage mild symptoms, support recovery alongside medication, and reduce the chance of recurrence.
Why BV Keeps Coming Back
BV happens when the balance of bacteria in the vagina shifts. Normally, beneficial bacteria (mainly lactobacilli) keep the environment slightly acidic, which prevents harmful bacteria from taking over. When that balance tips, you get the telltale fishy odor, thin grayish-white discharge, and sometimes itching or burning. Up to half of people treated for BV experience a recurrence within months, which is why home prevention strategies matter as much as the initial treatment.
In 2025, the American College of Obstetricians and Gynecologists recommended for the first time that sexual partners of people with recurrent BV also receive treatment. This reflects growing evidence that BV-associated bacteria can be passed back and forth between partners, contributing to the cycle of recurrence. If your BV keeps returning, this is worth discussing with your healthcare provider.
Habits That Protect Your Vaginal Balance
The most reliable home approach to BV isn’t a supplement or a rinse. It’s removing the things that disrupt your vaginal ecosystem in the first place.
Douching is the single biggest modifiable risk factor. It strips away protective bacteria and raises vaginal pH, creating ideal conditions for BV-causing organisms. This includes vinegar douches, which some people try as a remedy but which actually increase infection risk. Scented soaps, body washes, bubble baths, and vaginal deodorants have similar effects. The vagina is self-cleaning. Warm water on the external area is enough.
Wearing cotton underwear (or at least cotton-lined) helps keep the area dry, since moisture encourages bacterial overgrowth. Changing out of wet swimsuits or sweaty workout clothes promptly makes a difference too. Using unscented laundry detergent for underwear removes another potential source of irritation. During your period, change tampons and pads frequently, and consider unscented products.
Probiotics for Vaginal Health
Oral probiotics containing specific strains of lactobacillus are the most studied home supplement for BV. The logic is straightforward: if BV results from too few lactobacilli, reintroducing them should help. Some clinical trials show that certain strains (particularly Lactobacillus rhamnosus and Lactobacillus reuteri) can improve cure rates when taken alongside antibiotics and may help prevent recurrence. The evidence is promising but not yet strong enough for major medical guidelines to formally recommend them.
If you try probiotics, look for products specifically formulated for vaginal health rather than general gut health probiotics. Take them for at least one to two months to give the bacteria time to establish themselves. Eating fermented foods like yogurt, kefir, and sauerkraut provides additional lactobacilli, though the strains in food aren’t always the same ones that colonize the vagina.
Vitamin D and Diet
Vitamin D plays a surprisingly direct role in vaginal health. A meta-analysis published in Frontiers in Nutrition found that vitamin D deficiency increases the risk of BV by 54%. The connection isn’t random: vitamin D helps promote glycogen deposits in vaginal tissue, and that glycogen feeds the lactobacilli that keep harmful bacteria in check. One clinical trial found that correcting a vitamin D deficiency eliminated asymptomatic BV in non-pregnant women without any other treatment.
Most people don’t know their vitamin D levels, but deficiency is extremely common, especially in people with darker skin, those who live in northern climates, and anyone who spends limited time outdoors. Getting your levels checked with a simple blood test is a reasonable step if you deal with recurrent BV. In the meantime, fatty fish, fortified milk, eggs, and 15 to 20 minutes of sun exposure several times a week all support healthy vitamin D levels.
Reducing sugar intake may also help indirectly. High blood sugar can shift the vaginal environment in ways that favor harmful bacteria, though the research connecting diet to BV is less robust than the vitamin D data.
Boric Acid Suppositories
Boric acid vaginal suppositories are one of the more evidence-backed home options, particularly for recurrent BV. The CDC’s STI treatment guidelines mention intravaginal boric acid at 600 mg daily for 21 days as part of a multi-step regimen for people with multiple recurrences, used after a course of antibiotics and before a maintenance phase. This isn’t a first-line treatment or a standalone cure. It works best as one piece of a broader plan.
Boric acid suppositories are available over the counter at most pharmacies. They’re inserted vaginally, not taken by mouth (boric acid is toxic if swallowed). Common side effects include watery discharge and mild irritation. They should never be used during pregnancy, and they’re not appropriate for a first episode of BV before you’ve confirmed the diagnosis.
What About pH-Balancing Gels?
Over-the-counter vaginal gels containing lactic acid are marketed as a way to restore healthy pH and treat BV. The reality is less encouraging. A systematic review in PLOS One evaluated multiple lactic acid products and found that two out of three trials showed lactic acid was significantly less effective than standard antibiotics. One study found it performed no better than a placebo. These products also didn’t meaningfully change the vaginal bacterial composition.
Some people find these gels soothing for mild symptoms, and they’re generally safe to use. But if you’re relying on a pH gel as your primary BV treatment, you’re likely delaying effective care.
Remedies to Skip
Several popular home remedies for BV have no supporting evidence and carry real risks.
- Apple cider vinegar baths: There’s no clinical evidence these help with BV. Vinegar can cause burning and irritation of sensitive vaginal tissue, and vinegar douches actively disrupt healthy bacteria.
- Tea tree oil: While it has antimicrobial properties in lab settings, tea tree oil can trigger allergic reactions and is not safe during pregnancy. It hasn’t been shown to clear BV in human studies.
- Hydrogen peroxide douches: Sometimes recommended online, these can damage healthy vaginal tissue and worsen the bacterial imbalance you’re trying to fix.
- Garlic inserts: No evidence of benefit, and placing raw garlic in the vagina can cause chemical burns and irritation.
When Home Care Isn’t Enough
Home strategies work best for prevention and as a complement to medical treatment. They’re less reliable as standalone cures. BV that produces strong odor, heavy discharge, or discomfort typically needs prescription antibiotics to fully resolve. Untreated BV can increase susceptibility to sexually transmitted infections and, during pregnancy, raises the risk of preterm delivery and other complications.
If you’ve had BV diagnosed and treated before and recognize mild, early symptoms returning, trying probiotics, boric acid suppositories, and hygiene adjustments for a few days is reasonable. But if symptoms persist beyond a week, worsen, or are accompanied by pelvic pain or fever, that points to something that needs medical attention rather than home management.