Key takeaways
Probiotics, especially Lactobacillus species, are dietary supplements that play a crucial role in maintaining vaginal health by adhering to the vaginal lining and preventing pathogenic colonization, thus supporting a balanced vaginal microbiota.
Specific probiotic strains of Lactobacillus, such as L. acidophilus, L. rhamnosus, L. reuteri, L. crispatus, L. gasseri, and Bifidobacterium lactis, have been identified as good bacteria, with health benefits like maintaining a low vaginal pH and preventing infections.
Probiotics can support digestive health and help reduce the recurrence of bacterial vaginosis and vaginal yeast infections when used alongside standard treatments, but they are not a standalone cure.
When taking probiotics for vaginal health and wellness, it’s important to select products based on clinical evidence supporting specific Lactobacillus strains, considering factors such as the need for refrigeration and daily dosage requirements.
If you’re wondering how to support vaginal health naturally, you’re not alone. Many people turn to probiotics to help restore gut health and balance of microorganisms, which in turn may reduce the risk of common infections like bacterial vaginosis and yeast infections. But with so many options available, choosing the best probiotic for vaginal health can be confusing. Here’s what you need to know to pick the right one for you.
RELATED: See our best Lactobacillus prices
Probiotics and vaginal health
A balanced vaginal microbiome is a hot topic in women’s health and is an extension of a strong gut microbiome. Beneficial microbes, such as prebiotics and probiotics, help protect against infections, support pH balance, and contribute to overall reproductive health. The dominant bacteria in a healthy vagina are from the Lactobacillus genus, which help maintain an acidic pH (around 4.0) that inhibits the growth of harmful pathogens.
Probiotics can help restore the gut microbiota’s dysbiosis when it’s disrupted, whether due to antibiotics, stress, hormonal changes, or dietary changes. They achieve this by producing substances such as lactic acid and hydrogen peroxide, which make the vaginal environment less hospitable to harmful bacteria and yeast.
Probiotics may not cure an active infection alone, but research shows that they can support treatment and reduce recurrence when used in conjunction with antibiotics or antifungals. For example, adding probiotics to metronidazole treatment for bacterial vaginosis has been shown to reduce recurrence rates.
6 probiotics for vaginal health
Here are six strains with research-backed benefits for vaginal health:
1. Lactobacillus acidophilus
One of the most well-known probiotics, L. acidophilus, helps maintain a healthy pH and supports the growth of beneficial bacteria. It’s found in fermented foods such as yogurt, miso, kimchi, and tempeh, as well as in standalone supplements.
2. Lactobacillus rhamnosus
Particularly strains GR-1 and LbV 96, which have shown effectiveness in preventing and treating bacterial vaginosis and yeast infections.
3. Lactobacillus reuteri
Often paired with L. rhamnosus (GR-1), this strain has been shown to reduce the recurrence of infections and support a balanced vaginal microbiome.
4. Lactobacillus crispatus
A naturally occurring strain in the vaginal flora. In clinical trials, it significantly reduced the recurrence of bacterial vaginosis when used after antibiotic treatment.
5. Lactobacillus gasseri
This strain helps lower pH and prevent overgrowth of harmful microbes. Strain LbV 150N is commonly included in vaginal health supplements.
6. Bifidobacterium lactis
Though better known for digestive support, B. lactis also contributes to vaginal health by enhancing the mucosal barrier and supporting immune function.
Choosing the best probiotics for vaginal health
When selecting a probiotic supplement, look for products that include a mix of Lactobacillus and Bifidobacterium strains, especially those listed above. Other factors to consider include:
- CFU (colony-forming unit) count: Aim for 1 billion CFUs or more.
- Storage requirements: Some products require refrigeration, while others are shelf-stable.
- Dose frequency: Typically, once or twice daily.
- Additives: Select gluten-free and allergen-free options if necessary.
Two popular and effective options include:
- Ultra-Iora Women’s: Shelf-stable, gluten-free, taken twice daily.
- Jarrow Formulas Fem-Dophilus: Contains GR-1 and RC-14 strains, refrigerated, once daily.
Tips for optimizing vaginal health with probiotics
- Eat fermented foods: Yogurt, kefir, sauerkraut, kimchi, miso, and kombucha are great sources of probiotics.
- Follow the label: Take your supplement as directed, paying special attention to whether it should be taken with food.
- Be patient: It may take a few weeks to notice benefits. Allow at least a month and stay consistent with use.
- Maintain good hygiene and a balanced diet: Avoid using scented products and opt for a fiber-rich diet.
FAQs about vaginal probiotics
Can probiotics cure existing vaginal infections?
No, but they may improve outcomes when used alongside prescribed treatments and reduce future infections.
Are there side effects to using probiotics for vaginal health?
They’re generally safe. Some people may experience mild digestive discomfort, such as bloating. Those with weakened immune systems should consult a healthcare provider before initiation, as supplementation with lactobacillus strains is a live microorganism.
Can pregnant women use probiotics?
Yes, but it’s always best to talk to a healthcare provider first. Current evidence shows no significant risk in healthy individuals.
The bottom line
The best probiotics for vaginal health include strains of Lactobacillus and Bifidobacterium that help maintain a balanced pH level and support the growth of beneficial bacteria. Supplements like Ultra-Iora Women’s or Jarrow Formulas Fem-Dophilus offer easy ways to incorporate these strains into your routine. While probiotics can’t replace medical treatment, they can be a safe and effective addition to your vaginal health regimen.
If you’re experiencing symptoms or have questions about probiotics, consult your healthcare professional. And if you’re starting a probiotic, give your body time to adjust—the benefits are worth the wait.
- Probiotics regulate gut microbiota: An effective method to improve immunity, Molecules (2021).
- Probiotics, gut microbiota, and their influence on host health and disease, Molecular Nutrition & Food Research (2017).
- Probiotics in the management of ulcerative colitis, Gastroenterology & Hepatology (2010).
- Gut microbiota in human adults with type 2 diabetes differs from non-diabetic adults, PLoS One (2010).
- Comparison of the vaginal microbiota diversity of women with and without human papillomavirus infection: A cross-sectional study, BMC Infectious Diseases (2013).
- Treating vaginitis with probiotics in non-pregnant females: A systematic review and meta-analysis, Experimental and Therapeutic Medicine (2020).
- A systematic review and meta-analysis on the efficacy of probiotics for bacterial vaginosis, European Review for Medical and Pharmacological Sciences (2022).
- Are probiotics and prebiotics safe for use during pregnancy and lactation? A systematic review and meta-analysis, Nutrients (2021).
- Probiotics for vulvovaginal candidiasis in non-pregnant women, The Cochrane Database of Systematic Reviews (2017).
- Warding off recurrent yeast and bacterial vaginal infections: Lactoferrin and Lactobacilli, Microorganisms (2020).
- Pobiotics in Cancer, Frontiers in Oncology (2021)
- Adherence of human vaginal lactobacilli to vaginal epithelial cells and interaction with uropathogens, Infection and Immunity (1998).
- Quantification, isolation and characterization of Bifidobacterium from the vaginal microbiomes of reproductive aged women, Anaerobe (2017).
- Effect of a yoghurt drink containing Lactobacillus strains on bacterial vaginosis in women-a double-blind, randomized, controlled clinical pilot trial, Beneficial Microbes (2017).
- Efficacy of orally applied probiotic capsules for bacterial vaginosis and other vaginal infections: A double-blind, randomized, placebo-controlled study, European journal of obstetrics, gynecology, and reproductive biology (2013).
- Augmentation of antimicrobial metronidazole therapy of bacterial vaginosis with oral probiotic Lactobacillus rhamnosus GR-1 and Lactobacillus reuteri RC-14: randomized, double-blind, placebo controlled trial, Microbes and Infection (2006).
- Improved treatment of vulvovaginal candidiasis with fluconazole plus probiotic Lactobacillus rhamnosus GR-1 and Lactobacillus reuteri RC-14, Letters in Applied Microbiology (2009).
- Oral use of Lactobacillus rhamnosus GR-1 and L. fermentum RC-14 significantly alters vaginal flora: Randomized, placebo-controlled trial in 64 healthy women, FEMS Immunology and Medical Microbiology (2003).
- Randomized trial of Lactin-V to prevent recurrence of bacterial vaginosis, New England Journal of Medicine (2020).
- Vaginal microbiota and the potential of Lactobacillus derivates in maintaining vaginal health, Microbial Cell Factories (2020).
- Effects of probiotics for the treatment of bacterial vaginosis in adult women: A meta-analysis of randomized clinical trials, Archives of gynecology and obstetrics (2014).
- Female gut and genital tract microbiota-induced crosstalk and differential effects of short-chain fatty acids on immune sequelae, Frontiers in Immunology (2020).
- Bifidobacterium lactis, International Probiotics Association (2021).
- Clinical Guide to Probiotic Products Available in USA, Alliance for Education on Probiotics (2023).
- The role of probiotics in vaginal health, Frontiers in Cellular and Infection Microbiology (2022).