Bacterial vaginosis, or BV, is a common imbalance of the vagina’s natural bacteria. It is treated with antibiotics prescribed by a clinician, and it often comes back. Preventing recurrence means finishing treatment exactly as prescribed and reducing the things that disturb the vaginal environment, mainly douching and new or multiple sexual partners. There is no guaranteed way to stop BV from returning, and anyone who says otherwise is overselling.
BV is not a sexually transmitted infection in the classic sense. It is not caused by a single germ you catch. It happens when the normal mix of vaginal bacteria shifts — the protective Lactobacillus species drop and other bacteria, especially Gardnerella, multiply. Understanding that shift is the key to both treatment and prevention.
What Actually Causes Bacterial Vaginosis?
BV is a disruption of the vaginal microbiome, not an infection you picked up from someone. In a healthy vagina, Lactobacillus bacteria dominate and produce lactic acid, which keeps the environment acidic — typically around pH 4.0 to 4.5. That acidity helps suppress other organisms.
When Lactobacillus levels fall, pH rises and a broader mix of bacteria overgrows. This is why BV is described as a “dysbiosis” — an imbalance of the community — rather than a straightforward infection.
Several things are linked to that shift:
- Douching, which washes out protective bacteria
- New sexual partners or multiple partners
- Lack of condom use
- An intrauterine device (IUD), in some cases
- Smoking
These are associations, not guaranteed causes. Many people with none of these factors still get BV. The link with sexual activity is real but does not make BV a sexually transmitted infection. It can occur in people who have never had sex.
One point that surprises people: BV is not caused by poor hygiene. In fact, aggressive washing and douching make it more likely, because they remove the bacteria that protect you.
How Is Bacterial Vaginosis Treated?
BV is treated with antibiotics, and they work — typically a course of oral metronidazole, or a topical option such as metronidazole gel or clindamycin cream. These are prescription treatments, and the specific choice and duration are decided by a clinician.
The single most important step is finishing the full course even if symptoms clear in a few days. Stopping early lets the imbalance return. Some clinicians also prescribe a longer or maintenance course for people who have repeated episodes, though this is a clinical judgment rather than a universal standard.
Two practical points that matter:
- Avoid alcohol while taking oral metronidazole and for a period afterward — the label warns of a reaction with alcohol. Follow the specific instructions you are given.
- Do not use a treatment left over from a previous episode or borrowed from someone else. BV symptoms overlap with other conditions, including yeast infections and some sexually transmitted infections, which need different treatment.
If symptoms do not improve or return quickly, that is a reason to be reassessed, not to self-treat. A clinician can confirm the diagnosis and check for other causes.
Why Does Bacterial Vaginosis Keep Coming Back?
Recurrence is the rule rather than the exception with BV. A large share of people who are treated see it return, often within months. This is one of the most frustrating aspects of the condition, and it is not a sign that you did something wrong.
The reason is rooted in the microbiome. Antibiotics knock back the overgrown bacteria, but they do not always restore a healthy Lactobacillus-dominant community. Without that protective layer, the environment stays vulnerable, and the same imbalance can re-establish.
Some people get what clinicians call recurrent BV — multiple episodes over a year. This pattern is recognized in clinical practice, and management often involves longer treatment or a maintenance approach rather than a single short course.
It is worth being honest about the evidence here. Strategies aimed at rebuilding Lactobacillus — such as probiotic suppositories — are widely discussed and sometimes used, but the clinical trial evidence that they reliably prevent recurrence is limited and mixed. Some studies suggest possible benefit; results vary. No probiotic has been shown to cure BV or guarantee it stays away.
How To Fix Bacterial Vaginosis And Stop It Coming Back
There is no single fix. Managing BV well combines proper treatment with reducing the factors that disturb the vaginal environment. Here is what the evidence supports, and where it is thinner.
Treat the episode fully and correctly
Complete the prescribed course. If BV returns, get reassessed rather than reaching for old antibiotics. For recurrent cases, ask your clinician about longer or suppressive treatment options.
Stop douching
This is one of the clearest steps. Douching disrupts the protective bacterial community and is associated with BV and its recurrence. The vagina cleans itself. Internal washing is not needed and generally does more harm than good.
Reconsider scented products
Scented washes, sprays, and wipes can irritate the area and disturb the natural balance. Plain water and gentle, unscented cleansing of the external area is enough. This is sensible guidance rather than something proven in large trials, but it aligns with how the vaginal environment works.
Think about sexual practices
Condom use is associated with lower rates of BV. Because BV is linked to sexual activity — even though it is not a sexually transmitted infection — reducing new partners and using condoms may lower recurrence for some people. The evidence supports an association; it does not prove that changing behavior will prevent every recurrence. Some clinicians discuss treatment of male partners in recurrent cases, but this is not established standard practice and the evidence is not strong enough to present it as a proven fix.
Be cautious with probiotics
Oral and vaginal probiotics are heavily marketed for BV. The honest position: the evidence that they prevent recurrence is limited, and results across studies are mixed. They are not a substitute for antibiotics. If you want to try one, treat it as a supportive step, not a cure, and tell your clinician.
What About Home Remedies and “Natural” Cures?
BV has attracted a lot of home-remedy claims, and most are not supported by strong evidence. It is worth separating what has some basis from what is marketing.
Boric acid has been studied as an adjunct in some recurrent BV cases, often alongside antibiotics. It is not a first-line treatment, it is not safe to ingest, and it should not be used during pregnancy. Any use should be discussed with a clinician.
Probiotics, as noted, have mixed and limited evidence for prevention.
Yogurt, garlic, tea tree oil, and vinegar douches have no reliable clinical evidence showing they treat BV. Some, like vinegar douching, may actively disturb the vaginal environment. Tea tree oil and other essential oils can irritate sensitive tissue and should not be inserted into the vagina.
No home remedy has been shown to cure BV as reliably as prescribed antibiotics. If you are pregnant, this matters more — BV during pregnancy is associated with risks, and treatment should be guided by a clinician rather than home remedies.
When Should You See a Clinician?
See a clinician if you have a change in vaginal discharge, a fishy odor, or discomfort — especially the first time, because BV symptoms overlap with yeast infections and sexually transmitted infections that need different treatment. A diagnosis matters before treatment.
Also seek care if symptoms return after treatment, if you are pregnant, or if you have pelvic pain or fever, which can signal something more serious than BV.
BV is common, treatable, and often recurring. Managing it well means treating each episode properly, protecting the vaginal environment, and being realistic that recurrence is common — not a personal failure. If it keeps coming back, that is a conversation to have with a clinician about longer-term options, not a reason to keep self-treating.
Frequently Asked Questions
Can bacterial vaginosis go away on its own?
Sometimes mild BV clears without treatment, but it often persists or returns, and prescribed antibiotics are the reliable treatment. See a clinician for a confirmed diagnosis rather than waiting it out.
Is bacterial vaginosis a sexually transmitted infection?
No. BV is an imbalance of the vagina’s natural bacteria, not an infection caused by a single organism passed between partners, though sexual activity is linked to it. It can occur in people who have never had sex.
Do probiotics stop bacterial vaginosis from coming back?
The evidence is limited and mixed; some studies suggest possible benefit, but no probiotic has been shown to reliably prevent recurrence. They are not a substitute for prescribed antibiotics.
How can I lower my risk of getting BV again?
Avoid douching, limit scented products, and consider condom use, since these are linked to a healthier vaginal environment. Finish any prescribed treatment fully, and see a clinician if symptoms return.
