Keep BV & Yeast Infections From Coming Back

The clinical definitions are specific: recurrent bacterial vaginosis is 3 or more BV episodes in a year, and recurrent vulvovaginal candidiasis (RVVC) is 4 or more yeast infections in a year. Hitting either threshold is the signal that one-off treatments aren't enough on their own, and that a proper prevention plan with a clinician — often a suppressive medication regimen — is worth it. If you're getting one or two a year, you're not in the recurrent range, but the same behaviour-first steps help you stay out of it.

Boric acid vaginal suppositories are used as an add-on for stubborn BV and for non-albicans or azole-resistant yeast, usually under a clinician's guidance rather than as a first move. The evidence is moderate for those specific situations. Safety is the key caveat: boric acid is a vaginal suppository ONLY. It is toxic if swallowed and must never be taken by mouth, it should be kept away from children and pets, and it should not be used during pregnancy. If you're reaching for boric acid because nothing else is working, that's a reason to get a confirmed diagnosis rather than to keep self-treating.

Probiotics — usually lactobacillus, taken orally or vaginally — are heavily marketed for this, but the evidence that they prevent BV or yeast is limited and mixed. They're generally low-risk to try and won't hurt as an add-on, but they shouldn't be your main strategy, and they're no substitute for the proven approaches: stopping triggers, and for genuinely recurrent cases, a clinician-prescribed suppressive regimen. If probiotics haven't broken your cycle, that's expected given the evidence, not a failure on your part.

BV and yeast are not classic sexually transmitted infections, but sex does play a role. In BV, a new or multiple partners and unprotected sex can disturb the vaginal bacterial balance, and condoms are linked to fewer recurrences; routine treatment of male partners hasn't been shown to help, though this is an evolving area. Yeast can occasionally pass between partners but usually isn't a partner-driven infection. The bigger point: if symptoms keep returning, it's worth ruling out trichomoniasis, which IS an STI and can feel very similar — that needs testing, and a partner would need treating too.

Antibiotics kill off the protective bacteria (lactobacilli) that normally keep candida in check, so yeast can overgrow once that competition is gone — which is why thrush so often follows a course of antibiotics. The fix isn't to avoid antibiotics you genuinely need, but to only take them when they're truly indicated, and to tell your prescriber you're prone to yeast so they can advise what to watch for. For people who reliably get thrush with every course, a clinician can sometimes plan a preventive antifungal alongside the antibiotic.

See a clinician if you're hitting the recurrent thresholds (3+ BV or 4+ yeast infections in a year), if OTC treatment doesn't fully clear your symptoms, if you're pregnant, or if you're not certain which infection you actually have. Recurrent symptoms are frequently misdiagnosed — BV, yeast and trichomoniasis feel similar, and self-treating the wrong one keeps the cycle going. A simple test confirms what's really happening, and for true recurrent cases a clinician can prescribe a suppressive regimen (like twice-weekly metronidazole gel or weekly fluconazole) that self-treatment can't match.