Probiotics for Bacterial Vaginosis: Quick Guide

If you’ve ever dealt with bacterial vaginosis (BV), you know how uncomfortable it can be. The good news is that certain probiotics can help restore balance in the vagina and keep BV from coming back. This guide breaks down the most useful strains, how to take them, and what to watch for.

Why probiotics matter for BV

BV happens when the healthy bacteria in the vagina, mainly Lactobacillus, get pushed out by other microbes. When Lactobacillus numbers drop, the pH rises and symptoms like odor, discharge, and itching appear. Probiotics work by adding good bacteria back, lowering the pH, and crowding out the “bad” microbes.

Best strains and how to take them

Not every probiotic will help BV. Studies point to a few key strains:

• Lactobacillus rhamnosus GR-1 – one of the most researched for vaginal health.
• Lactobacillus reuteri RC-14 – often paired with GR-1 for a stronger effect.
• Lactobacillus crispatus – naturally found in a healthy vagina and good at keeping the pH low.

Look for a product that lists one of these strains on the label and provides at least 1 billion CFU per dose. A common regimen is one capsule daily for 30 days, followed by a maintenance dose of a few times a week.

If you prefer foods, fermented dairy (yogurt, kefir) that contain live cultures can add Lactobacillus, but the strain match is less certain. A daily serving can be a helpful addition to a capsule routine.

Timing matters. Take the probiotic on an empty stomach—about 30 minutes before breakfast or two hours after a meal—so the bacteria aren’t killed by stomach acid.

For best results, combine probiotics with a short course of a doctor‑prescribed antibiotic if you’re currently treating an active BV episode. The antibiotic clears the infection, then the probiotic helps prevent it from returning.

Safety is straightforward for most people. Side effects are rare but can include mild gas or bloating. If you’re pregnant, breastfeeding, or have a weakened immune system, check with your doctor before starting any new supplement.

Keep an eye on symptom changes. If discharge or odor improves within a few weeks, that’s a good sign the probiotic is working. If symptoms persist or get worse, contact a healthcare professional—probiotics are a supplement, not a cure for severe infections.

In summary, pick a probiotic that contains Lactobacillus rhamnosus GR‑1, Lactobacillus reuteri RC‑14, or Lactobacillus crispatus, follow the dosage instructions, and stay consistent. Pairing the supplement with a healthy diet and good hygiene habits gives you the strongest defense against BV.