Bacterial vaginosis (BV) is treated with prescription antibiotics, either taken by mouth or applied vaginally. The most common options are metronidazole and clindamycin, though newer single-dose treatments are also available. No over-the-counter product can cure BV on its own, but certain supportive measures can help prevent it from coming back, which matters a lot: 50% to 80% of women experience a recurrence within a year of finishing antibiotics.
Prescription Antibiotics for BV
BV happens when the balance of bacteria in the vagina shifts, with harmful bacteria outnumbering the protective ones. Antibiotics work by killing off the overgrown bacteria so the vaginal environment can reset. There’s no clinical evidence that oral antibiotics work better than vaginal ones or vice versa, so the choice often comes down to personal preference and what your provider recommends.
The two main antibiotics used are metronidazole and clindamycin. Metronidazole comes as an oral pill (typically taken twice daily for seven days) or as a vaginal gel. Clindamycin is available as a vaginal cream, used at bedtime for seven days. In clinical trials, a single-dose clindamycin cream cured BV in about 64% of women at the one-month mark, which was just as effective as the seven-day version (63%). If you’re looking for the simplest possible regimen, that’s a strong option.
Single-Dose Treatments
If a multi-day regimen feels like a hassle, there are single-dose alternatives worth discussing with your provider. Secnidazole is an oral antibiotic that comes as a packet of granules you take once, mixed into food like yogurt or applesauce. In clinical trials, it cured BV in 53% of women compared to 19% on placebo. That cure rate is lower than the multi-day options, but the convenience of one dose appeals to many people.
There’s also a single-dose metronidazole vaginal gel (a higher-concentration version than the standard gel). Its cure rate in trials was more modest at 37%, so it’s not always the first choice. Your provider can help weigh the tradeoff between convenience and effectiveness based on how severe your symptoms are and whether you’ve dealt with BV before.
What to Do for Recurrent BV
Recurrence is the biggest frustration with BV. When it keeps coming back, treatment shifts to a longer, staged approach. One protocol backed by clinical guidelines starts with a week of oral antibiotics, followed by boric acid suppositories (600 mg inserted vaginally each night) for 21 days. After that, a maintenance phase of vaginal metronidazole gel twice a week for four to six months helps keep BV from returning.
Boric acid suppositories are available over the counter, but they’re not a standalone cure for BV. They work best as part of this structured follow-up after antibiotics. Boric acid helps restore the vagina’s naturally acidic pH, making it harder for the bacteria that cause BV to thrive again. These suppositories should never be taken orally, as boric acid is toxic when swallowed.
Probiotics for Vaginal Health
Probiotics containing Lactobacillus strains are increasingly popular as a complement to BV treatment. The idea is straightforward: a healthy vagina is dominated by Lactobacillus bacteria, and BV disrupts that balance. Restoring those bacteria, at least in theory, should help.
A clinical study testing an oral combination of L. acidophilus, L. rhamnosus, and L. reuteri found that after six weeks, 60% of women with disrupted vaginal flora showed measurable improvement. The ingested bacteria were detected in the vagina afterward, confirming they actually colonized there rather than just passing through the gut. That said, probiotics alone don’t reliably cure an active BV infection. They’re better understood as a support strategy during or after antibiotic treatment, not a replacement for it.
Home Remedies: What Helps and What Doesn’t
Hydrogen peroxide douches are one of the most commonly searched home remedies for BV. Healthy vaginal bacteria naturally produce hydrogen peroxide, and some early research suggests that washing with it for about a week may help regulate vaginal pH and reduce symptoms. However, douching of any kind can also disrupt the vaginal environment further, so this approach carries real risk alongside its potential benefit.
Tea tree oil, apple cider vinegar, and garlic are frequently mentioned online, but none of these have strong clinical evidence supporting their use for BV. Some can cause irritation or chemical burns when applied to vaginal tissue. The safest rule: if it wasn’t designed to go inside the vagina, it probably shouldn’t.
Preventing BV From Coming Back
Because recurrence rates are so high, prevention habits matter as much as the initial treatment. Most of these center on protecting the vagina’s natural pH, which sits between 3.8 and 4.5, acidic enough to keep harmful bacteria in check.
- Skip the soap inside. Wash your vulva with warm water only. Soap, even mild soap, can shift vaginal pH. Your vagina is self-cleaning and doesn’t need internal washing.
- Avoid scented products. Scented pads, tampons, sprays, and washes can all alter vaginal pH and create conditions where BV-causing bacteria flourish.
- Don’t douche. Douching strips out protective bacteria and is consistently linked to higher BV rates.
- Change out of wet clothing quickly. Sitting in sweaty workout clothes or a wet swimsuit creates a warm, moist environment that favors bacterial overgrowth.
These habits won’t guarantee you never get BV again, but they reduce the odds meaningfully. If you’re someone who deals with recurrent episodes, combining these prevention strategies with the longer maintenance antibiotic protocols gives you the best shot at breaking the cycle.