Key Takeaways
- Getting rid of BV means solving two problems at once: clearing the current episode with a first-line antibiotic, and preventing the return that affects 58 percent of women within a year.[1][2]
- First-line treatment is metronidazole 500 mg by mouth twice daily for 7 days, metronidazole 0.75% gel for 5 days, or clindamycin 2% cream for 7 days, with cure rates around 80 to 95 percent.[1]
- Finish the entire course even after symptoms improve. Stopping early leaves a bacterial reservoir and is one of the main reasons BV returns.[1]
- For recurrent BV, twice-weekly metronidazole gel cut recurrence to 25.5 percent versus 59.1 percent on placebo, the strongest suppression evidence we have.[3]
- Treating a male partner along with the woman reduced recurrence from 63 to 35 percent at 12 weeks in a 2025 trial, a data-backed option for monogamous couples with recurrent BV.[6]
- Boric acid and the Lactin-V probiotic target the two obstacles antibiotics miss, the biofilm and the lost protective flora, and can be added for the hardest cases.[4][5]
- Douching and over-the-counter yeast treatments do not help and can make BV worse; the odor and discharge clear with the right antibiotic, not with washes.[10]
"How do I get rid of BV" is really two questions folded into one. The first is how to clear the episode you have now, and the answer is well established. The second is how to stop it from coming back, and that is where most of the frustration, and most of the recent evidence, lives. This guide walks through both in order.
Two Problems, One Goal
An antibiotic that clears BV does not necessarily end the story. The underlying problem is a shift in the vaginal microbiome, and the antibiotics we have suppress the offending bacteria without fully restoring the protective Lactobacillus and without reliably removing the biofilm layer that hides a reservoir of bacteria.[9] That is why 58 percent of women see BV return within 12 months of a single course.[2] So the realistic goal is a two-front campaign: treat the episode decisively, and if recurrence proves to be your pattern, layer on a prevention strategy.
The good news is that the two fronts have different levels of difficulty. Clearing a single episode is one of the more reliable treatments in primary care. It is only the prevention half that is hard, and even that has real evidence behind it now. Knowing which half applies to you, the first episode or the recurrence, is the first move.
Get the Diagnosis Right First
Before any treatment, make sure it is BV. Discharge and odor overlap with yeast and trichomoniasis, and because about 84 percent of BV is asymptomatic, guessing from symptoms is unreliable, and the number one reason a treatment seems to fail is that the diagnosis was wrong in the first place.[1] A swab and a pH check distinguish the three common causes in one pass, and a self-collected sample makes that possible without an in-person exam in many cases.
The cost of skipping this step is usually measured in weeks. An antifungal aimed at yeast does nothing for BV, and the reverse is true too, so someone who treats on a guess can burn two or three courses before getting it right. Confirm first, then treat, and the rest of the plan on this page works cleanly. For the full side-by-side, see the BV vs yeast guide.
Clearing a First Episode
For a first or occasional episode, the CDC first-line regimens all work well, with cure rates around 80 to 95 percent: metronidazole 500 mg by mouth twice daily for 7 days, metronidazole 0.75% vaginal gel once daily for 5 days, or clindamycin 2% cream at bedtime for 7 days.[1] These are equivalent enough that the choice usually comes down to preference: pill versus gel versus cream, and whether the oil-based clindamycin cream is acceptable given it can weaken latex condoms for up to five days.[1]
There is no effective over-the-counter treatment for BV in the United States, so a confirmed diagnosis and a prescription are the entry point, and the antibiotic options require a clinician.[1] If you have not actually confirmed it is BV, guessing wrong and using a yeast product is the single most common reason symptoms drag on.
| Regimen | Dose and duration |
|---|---|
| Metronidazole (oral) | 500 mg twice daily for 7 days |
| Metronidazole gel 0.75% | One applicator daily for 5 days |
| Clindamycin cream 2% | One applicator at bedtime for 7 days |
| Secnidazole 2 g | Single oral dose |
Finish the Course, Even When You Feel Better
The instructions most people skip are the most important. Symptoms, discharge and odor, typically improve within the first two to three days because the bacteria population crashes, but clearing the population completely takes the full course. Stopping early leaves a residual population, and a depleted but still present bacterial reservoir is exactly what seeds recurrence.[1] Finish every dose. During treatment, avoid douching, and consider avoiding sex or using condoms, so semen and a partner's bacteria are not re-introduced while the antibiotics are working.[1]
The Single-Dose Option
If the barrier to a week of pills is adherence or simply the hassle, secnidazole 2 g is a legitimate one-dose alternative, taken as granules sprinkled on soft food. It was designed precisely because multiday courses get abandoned, and an integrated analysis of its two registration trials found it clearly superior to placebo on cure.[8] The tradeoff is a lower headline cure rate than a full metronidazole course, so it is a convenience choice more than a potency choice, but for someone who knows they will not finish seven days of anything, a completed single dose can beat an abandoned weeklong course.[1][8]
When BV Keeps Coming Back
If you clear BV and it returns within weeks, once or twice, the diagnosis was likely correct but the biology was not finished with you. The two mechanisms that drive recurrence, persistent biofilm and the failure to restore Lactobacillus, mean that repeating the same single course indefinitely usually fails.[9] At that point the answer is a suppression plan rather than another short course.
| Strategy | What it is | Best for |
|---|---|---|
| Suppressive metronidazole gel | Twice-weekly gel after initial treatment | The best-supported recurrent BV maintenance |
| Partner treatment | Treat the male partner too | Monogamous couples with recurrent BV |
| Boric acid phase | 600 mg nightly for 21 days after antibiotics | Biofilm-heavy, hard-to-clear recurrence |
| Lactin-V probiotic | Lactobacillus crispatus after treatment | Investigational flora restoration |
Suppressive metronidazole gel is the anchor. In a randomized trial, women who completed initial treatment and then used twice-weekly gel had recurrence of only 25.5 percent over 16 weeks versus 59.1 percent on placebo.[3] A combined long-term regimen that stages an oral nitroimidazole, then boric acid, then maintenance gel has been described for the most difficult cases, achieving extended remission in clinical experience.[7]
How the Recurrence Options Compare
Because the recurrence strategies report different follow-up windows, comparing them side by side requires reading the fine print, but the headline numbers are instructive.
Suppressive metronidazole gel reached 25.5 percent at 16 weeks, Lactin-V reached 30 percent at 12 weeks, partner treatment reached 35 percent at 12 weeks, and standard care, treating the woman alone, sat at 63 percent.[3][5][6] The takeaway is not that one strategy is best, but that all of the active strategies beat doing nothing beyond a single course, and they can be combined.
Treating the Partner
The newest and most discussed lever is partner treatment. In the 2025 New England Journal of Medicine trial, couples were randomized so the woman alone was treated, or the male partner was also treated with oral metronidazole and clindamycin cream on the penile skin for 7 days. Recurrence at 12 weeks was 35 percent with partner treatment versus 63 percent without, a large enough gap that the safety board stopped the trial early for clear superiority of treating both.[6] The mechanism is consistent with the biofilm work showing the same Gardnerella biofilm on male partners.[9]
This is newer than the 2021 guidelines, so it is a discussion with your clinician rather than a standing recommendation, and it applies to women in monogamous relationships with a male partner and recurrent BV. But for that population it is among the most promising, evidence-backed moves available.
A few boundaries keep this guidance honest. The trial studied couples in a steady, monogamous relationship, so it does not directly speak to casual or new partnerships, and it does not change the fact that the woman's own treatment comes first.[6] It is also not a reason for a partner to take antibiotics without a clinician's involvement, since the partner regimen is a prescription decision too. For the people it fits, though, it is one of the clearest recurrence reductions in the recent BV literature.
Support Steps That Help
Alongside medication, a few behavioral steps align with the risk factors. Stop douching, which strips the protective lactobacilli and is associated with higher BV rates.[10] Use condoms, which buffer semen's alkaline effect and reduce the sexual risk factor, and hormonal contraception is associated with lower BV in multiple studies.[10] None of these substitutes for treatment, but they remove the conditions that quietly invite recurrence, and they cost nothing.
Smoking is the other modifiable one worth naming, since it appears repeatedly in the risk-factor data, and stopping it is reasonable advice that carries beyond BV anyway.[10] None of these lifestyle moves are a cure on their own, and someone who has done all of them and still recurs should not blame themselves, since the driving biology, biofilm and lost flora, does not respond to behavior alone.
If You Are Pregnant
BV in pregnancy deserves a separate line of the plan, because the stakes and the choices shift. BV is associated with a higher risk of preterm birth, which is why suspected BV in pregnancy should be confirmed and managed by the obstetric team rather than self-managed.[11] The antibiotic options overlap, metronidazole and clindamycin remain the classes used, but timing matters, and oral metronidazole is generally avoided in the first trimester where possible.[11]
Two rules apply specifically in pregnancy. Boric acid is not recommended, so it is not a recurrence tool here.[1] And any discharge, odor, or bleeding during pregnancy should prompt a call to the clinician rather than a wait, because the differential and the urgency both change.[1] With those adjustments, the same diagnosis-first, treat-completely logic from above applies.
What Does Not Help
Be clear about what will not fix BV. Over-the-counter antifungals target yeast, not the BV bacteria, and no BV antibiotic is available over the counter.[1] Douching and scented washes make the imbalance worse, not better.[10] Retail probiotics have weak and mixed evidence, with the one exception being the specific Lactobacillus crispatus strain in the Lactin-V trial, a prescription-stage live biotherapeutic rather than a shelf supplement.[5] Garlic, yogurt inserts, tea tree oil, and hydrogen peroxide are not supported and can irritate.
| Approach | Why it does not work |
|---|---|
| Over-the-counter antifungals | Target yeast, not the BV bacteria |
| Douching and scented washes | Strip lactobacilli, worsen imbalance |
| Retail probiotics | Weak, mixed evidence |
| Garlic, tea tree oil, peroxide | Unsupported, can irritate |
A Step-by-Step Plan
Putting it together, the plan most clinicians would recognize runs like this. Confirm the diagnosis with a swab rather than guessing. Treat with a completed first-line course. If BV returns once months later, a repeat course is reasonable. If it returns three or more times in a year, or immediately after each course, shift to a suppression plan: a boric acid or staged regimen if biofilm is the issue, then maintenance metronidazole gel, and consider partner treatment in a monogamous relationship. Revisit the diagnosis if a plan fails twice, because trichomoniasis and other causes can masquerade as BV.[1] With that sequence, the cycle most people are stuck in, treat, recur, repeat, is genuinely breakable.
What to expect over the next several weeks helps set the right expectations. The discharge and odor usually improve within the first few days, the course finishes within a week or so, and then the test of whether this was a one-off or the start of a recurrence pattern plays out over the next one to three months.[1][2] If it returns quickly, that is the signal to move to the suppression tier rather than to re-run the same course, and keeping a rough note of episode dates makes that conversation faster. None of this requires white-knuckling it alone; a clinician can map the plan to exactly where you are.
Frequently Asked Questions
The fastest reliable path is a completed prescription antibiotic: metronidazole, clindamycin, or a single 2 g dose of secnidazole. Symptoms usually improve in the first days, but finish the full course to prevent early return.{ref(1)}
Occasionally a mild case resolves on its own, but symptomatic BV rarely does, and untreated BV carries STI and pregnancy risk, so a confirmed symptomatic case should generally be treated.{ref(1)}
Because antibiotics clear the bacteria but not the biofilm layer and not the lost protective lactobacilli, so the anaerobes repopulate. This is why 58 percent of women recur within a year and why suppression, not one more short course, is the answer.{ref(9)}{ref(2)}
Suppressive metronidazole gel has the strongest evidence, cutting recurrence to 25.5 percent versus 59.1 percent on placebo, and it can be combined with boric acid and, in monogamous relationships, partner treatment.{ref(3)}{ref(4)}{ref(6)}
For recurrent BV in a monogamous relationship, the evidence now says yes, it can help. A 2025 trial found treating the male partner cut 12 week recurrence from 63 to 35 percent, though it is newer than current guidelines.{ref(6)}
Retail probiotics have weak, mixed evidence and are not recommended as routine therapy. The specific Lactobacillus crispatus strain tested as Lactin-V did cut recurrence, but it is a clinical-stage product, not a shelf supplement.{ref(5)}{ref(1)}
There is no reliable natural or over-the-counter cure for BV. Home remedies like garlic, tea tree oil, or hydrogen peroxide are unsupported and can irritate, and douching can make BV worse. Prescription antibiotics are the treatment.{ref(1)}{ref(10)}
Symptoms typically improve within the first two to three days, and the course runs 5 to 7 days depending on the regimen, with a single-dose secnidazole option. Finish the full course even after symptoms resolve.{ref(1)}
A layered plan works best: maintenance metronidazole gel, boric acid for biofilm, partner treatment where applicable, and removing triggers like douching. Combined, these beat repeated single courses.{ref(3)}{ref(4)}{ref(6)}{ref(10)}
It is reasonable to avoid sex or use condoms during treatment and until the course is complete, because semen and a partner's bacteria can work against the antibiotic, and oil-based clindamycin cream can weaken latex condoms for days.{ref(1)}
No. Each episode is curable, and with a suppression plan recurrence can be reduced substantially, though there is not yet a treatment that permanently eliminates the underlying susceptibility in everyone.{ref(2)}{ref(3)}
References
- Workowski KA, Bachmann LH, Chan PA, et al. Sexually Transmitted Infections Treatment Guidelines, 2021. MMWR Recomm Rep. 2021;70(4):1-187. PMID 34292926
- Bradshaw CS, Morton AN, Hocking J, et al. High recurrence rates of bacterial vaginosis over the course of 12 months after oral metronidazole therapy and factors associated with recurrence. J Infect Dis. 2006;193(11):1478-1486. PMID 16652274
- Sobel JD, Ferris D, Schwebke J, et al. Suppressive antibacterial therapy with 0.75% metronidazole vaginal gel to prevent recurrent bacterial vaginosis. Am J Obstet Gynecol. 2006;194(5):1283-1289. PMID 16647911
- Reichman O, Akins R, Sobel JD. Boric acid addition to suppressive antimicrobial therapy for recurrent bacterial vaginosis. Sex Transm Dis. 2009;36(11):732-734. PMID 19704395
- Cohen CR, Wierzbicki MR, French AL, et al. Randomized trial of Lactin-V to prevent recurrence of bacterial vaginosis. N Engl J Med. 2020;382(20):1906-1915. PMID 32402161
- Vodstrcil LA, Plummer EL, Fairley CK, et al. Male-partner treatment to prevent recurrence of bacterial vaginosis. N Engl J Med. 2025. PMID 40043236
- Surapaneni S, Akins R, Sobel JD. Recurrent bacterial vaginosis: an unmet therapeutic challenge. Experience with a combination pharmacotherapy long-term suppressive regimen. Sex Transm Dis. 2021;48(11):761-765. PMID 34110746
- Pentikis H, Adetoro N, Tipping D, Levy S. An integrated efficacy and safety analysis of single-dose secnidazole 2 g in the treatment of bacterial vaginosis. Reprod Sci. 2020;27(2):523-528. PMID 32046418
- Verstraelen H, Swidsinski A. The biofilm in bacterial vaginosis: implications for epidemiology, diagnosis and treatment. Curr Opin Infect Dis. 2013;26(1):86-89. PMID 23221767
- Fethers KA, Fairley CK, Hocking JS, Gurrin LC, Bradshaw CS. Sexual risk factors and bacterial vaginosis: a systematic review and meta-analysis. Clin Infect Dis. 2008;47(11):1426-1435. PMID 18947329
- Yudin MH, Money DM. No. 211 - Screening and Management of Bacterial Vaginosis in Pregnancy. J Obstet Gynaecol Can. 2017;39(8):e184-e191. PMID 28729110