Bacterial vaginosis (BV) is most effectively treated with prescription antibiotics, but several over-the-counter products can support treatment or help you figure out whether BV is what you’re dealing with. The most reliable purchases fall into a few categories: prescription medications from your doctor, probiotics with specific strains, pH test kits, and boric acid suppositories. Here’s what’s worth your money and what isn’t.
Prescription Antibiotics Come First
BV is a bacterial imbalance, not a yeast infection, and no over-the-counter product reliably cures it on its own. The CDC recommends three first-line options: oral metronidazole taken twice daily for 7 days, metronidazole vaginal gel used once daily for 5 days, or clindamycin vaginal cream applied at bedtime for 7 days. All require a prescription.
If you’ve never had BV before, or you’re unsure whether that’s what’s going on, getting a proper diagnosis matters. BV shares symptoms with yeast infections and other conditions, and treating for the wrong one wastes time and money. Many telehealth services now prescribe BV treatment after a brief consultation, so you don’t necessarily need an in-person visit.
A newer option, secnidazole, works as a single-dose oral treatment. You sprinkle the granules on applesauce, yogurt, or pudding and take it once. It’s more convenient but typically costs more, and your insurance may not cover it.
Home pH Test Kits
Vaginal pH test strips or swabs are available at most drugstores and online for under $20. They measure your vaginal acidity, which shifts higher (more alkaline) during a BV infection. The FDA notes that home pH tests show good agreement with a doctor’s assessment, and they use the same basic technology found in clinical settings.
The catch: an elevated pH reading doesn’t confirm BV specifically. Trichomoniasis and other infections also raise vaginal pH. A pH test can tell you something is off, but it can’t tell you exactly what. Think of it as a screening tool that helps you decide whether to seek treatment, not a diagnosis in itself.
Probiotics With the Right Strains
Not all probiotics are useful for vaginal health. The strains with the strongest evidence are Lactobacillus rhamnosus GR-1 and Lactobacillus reuteri RC-14. In a randomized, placebo-controlled trial, 60% of women taking these strains saw meaningful improvement in their vaginal flora after just 14 days, compared to 16% in the placebo group.
When shopping for a probiotic, look for these specific strain names on the label, not just the species. A product listing “Lactobacillus rhamnosus” without the GR-1 designation may use an entirely different strain with no vaginal health data behind it. The effective dose in the research was about 5 billion CFU total per day. Several brands sell formulations specifically marketed for vaginal health containing these strains.
Probiotics work best as a complement to antibiotic treatment, not a replacement. Taking them during and after a course of antibiotics may help restore healthy vaginal bacteria and reduce the chance of recurrence.
Boric Acid Suppositories
Boric acid vaginal suppositories are one of the most commonly purchased OTC products for BV and are widely available at drugstores and online. They’re typically sold in 600 mg capsules designed for vaginal insertion. Boric acid has antiseptic properties and may help disrupt the protective film that BV-causing bacteria build to shield themselves from treatment.
Boric acid is most often used for recurrent BV, either alongside antibiotics or as a maintenance strategy after treatment. It is not taken orally, as it’s toxic when swallowed. If you’re pregnant, boric acid suppositories are not safe to use.
What About Lactic Acid Gels?
Lactic acid gels and vaginal moisturizers are marketed as a way to restore vaginal acidity and treat BV naturally. The evidence is underwhelming. A systematic review found that two out of three trials comparing lactic acid products to metronidazole showed lactic acid was significantly less effective. One study found it equivalent to placebo. These products did not meaningfully change the vaginal microbiome composition.
If you find a lactic acid gel soothing for general comfort, it’s unlikely to cause harm. But don’t rely on it as a BV treatment.
Vitamin D Supplements
Vitamin D deficiency is linked to a higher risk of BV, particularly during pregnancy. A meta-analysis found that vitamin D deficiency increased BV risk by 54% in pregnant women. Maintaining blood levels of at least 30 ng/mL appears protective, and 600 IU daily is the standard recommended intake during pregnancy.
If you deal with recurrent BV, checking your vitamin D levels through a simple blood test is worth considering. Supplementing won’t treat an active infection, but correcting a deficiency could reduce how often BV comes back.
Products to Skip
Vaginal douches are the single worst purchase you can make if you’re prone to BV. Douches, whether they contain vinegar, baking soda, or iodine, disrupt the natural bacterial balance and acidity that keep BV-causing organisms in check. Scented tampons, pads, powders, and vaginal sprays carry similar risks. If you’re currently using any of these, stopping may be as important as anything you add to your routine.
Over-the-counter yeast infection treatments (like miconazole or fluconazole creams) do nothing for BV. BV is caused by an overgrowth of certain bacteria, not yeast. Using antifungal products for a bacterial problem delays proper treatment and can make symptoms harder to sort out when you do see a provider.
A Practical Shopping List
- Vaginal pH test strips to help determine if something is off before you seek care
- Probiotic with L. rhamnosus GR-1 and L. reuteri RC-14 to take during and after antibiotic treatment
- Boric acid suppositories (600 mg) for recurrent BV, used vaginally alongside or after prescription treatment
- Vitamin D supplement if you suspect deficiency or deal with frequent recurrences
- Unscented menstrual products to replace anything fragranced you currently use
The prescription antibiotic remains the core of treatment. Everything else on this list plays a supporting role, helping your body stay in balance after the antibiotics do their job.