Gardnerella vaginalis is a bacterium naturally present in the vagina. Yes, you read that right: it's part of your usual vaginal flora. The problem arises when it multiplies excessively, to the detriment of lactobacilli (the "good" protective bacteria). This imbalance is called bacterial vaginosis.

Grayish discharge, fishy odor, discomfort... These symptoms are not a sign of an STI, but rather an imbalance of your intimate flora.

Once bacterial vaginosis is established, your vagina finds itself in a vicious cycle: the pH becomes alkaline, lactobacilli struggle to regain control, and opportunistic bacteria like Gardnerella continue to proliferate. Without intervention, this imbalance tends to persist or worsen, hence the importance of treatment.

Let's be clear: no, not completely. And this is not to discourage you, but to save you from wasting time and energy on solutions that don't actually work.

Gardnerella is an opportunistic bacterium. When bacterial vaginosis is established, with all its symptoms, antibiotics (usually metronidazole or clindamycin) remain the treatment recommended by medical authorities. Why? Because they allow to:

• Rapidly reduce the pathogenic bacterial load
• Relieve bothersome symptoms
• Prevent complications (especially during pregnancy or gynecological surgery)

To date, according to medical recommendations and available scientific studies, no natural approach has demonstrated efficacy comparable to that of antibiotics for treating symptomatic bacterial vaginosis.

This does not mean that complementary approaches are of no interest, we will come back to this, but they cannot replace antibiotic treatment when it is necessary.

Read also: Comparison of the most effective probiotics and supplements for urinary comfort >

If you recognize yourself in this search for alternatives, know that you are far from an isolated case. And your reasons are perfectly legitimate.

This is probably the number one frustration: you take your antibiotic treatment, everything seems to return to normal... and a few weeks or months later, it's back. Some women experience 3, 4, 5 recurrences per year. It's exhausting, disheartening, and it gives the impression that nothing really works.

Antibiotics are not subtle: they eliminate bad bacteria, but also some of the good ones. The result? Your vaginal flora is weakened by the treatment, which can paradoxically encourage... a new recurrence. Or a yeast infection. Or both. It's a real vicious circle.

Nausea, metallic taste in the mouth, digestive problems... Metronidazole is not always well tolerated. Not to mention the prohibition of alcohol consumption during and after treatment, under penalty of very unpleasant side effects.

"Why isn't my body working normally?" "Why am I forced to take antibiotics every three months when other women never have this problem?" You may have asked yourself these questions. And they reflect a real feeling of injustice towards a body that seems to be out of whack.

The problem is not the antibiotic itself, but what happens after. This is the whole point of post-treatment support.

Warning: this section does not talk about curing active vaginosis without antibiotics. It talks about prevention, support, and reducing the risk of recurrence. Essential nuance.

Vaginal probiotics containing lactobacillus strains (especially Lactobacillus crispatus and Lactobacillus rhamnosus) can help restore a healthy vaginal flora. Some studies show that they can reduce the risk of recurrence when used as a supplement to antibiotic treatment or for maintenance.

Oral probiotics can also play a role, although their effectiveness on vaginal flora is more indirect. They contribute to the balance of the intestinal microbiota, which influences overall immunity.

Certain habits can disrupt vaginal balance and promote recurrences:

• Vaginal douches: they destroy the protective flora and alter the pH. To be completely banned.
• Harsh soaps: a mild soap with a neutral or slightly acidic pH is sufficient for the vulva. The inside of the vagina does not need to be washed.
• Unprotected intercourse during an outbreak: semen has an alkaline pH that can worsen the imbalance. Condoms can be useful during the treatment and rebalancing phase.
• Synthetic underwear: choose cotton, which allows the intimate area to breathe.
• Smoking: yes, even smoking can affect vaginal flora and increase the risk of vaginosis.

A weakened immune system can promote imbalances in the vaginal flora. Make sure to:

• Get quality sleep
• Manage your stress (easier said than done, we know)
• Adopt a balanced diet, rich in vegetables, fiber, and fermented foods
• Avoid excess sugar, which can promote imbalances

All these measures do not cure an established vaginosis, but they create a favorable environment for your flora to remain in balance after treatment. That's the real victory: not experiencing another recurrence.

Let's stop opposing approaches. It's not antibiotics OR natural. It's antibiotics + post-treatment strategy.

Recurrences are not inevitable, but they are not accidental either. Several factors explain their occurrence:

• The vaginal flora often has not had time to properly reconstitute after antibiotic treatment, leaving a fragile ground favorable to a new infection.
• Risk factors such as stress, an unbalanced diet, inappropriate intimate hygiene, or an asymptomatic partner have sometimes not been identified or corrected.
• In some cases, the antibiotic treatment was not followed scrupulously (premature discontinuation, missed doses), reducing its effectiveness.
• Finally, some strains of Gardnerella may be resistant to the antibiotics used, making the treatment less effective.

Here is an integrative approach that maximizes your chances of success:

During antibiotic treatment:

• Scrupulously follow the prescription (duration, dose)
• Avoid sexual intercourse or use condoms
• Continue to take care of your intimate hygiene gently

Immediately after treatment:

• Start a course of vaginal probiotics (ovules or oral capsules) for 7 to 10 days
• Potentially continue with oral probiotics for 1 to 3 months
• Take care of your gut microbiota (diet rich in fiber, fermented foods)

In the following months (prevention):

• Continue appropriate intimate hygiene (without excess)
• Maintain protective factors (sleep, stress management, diet)
• Consider a maintenance course of probiotics if you are prone to recurrences (for example, 1 week per month)

If you have a regular partner and recurrences persist, talk to your doctor: partner treatment may sometimes be necessary.

Certain situations require immediate medical attention:

• Persistent symptoms despite treatment: it is necessary to check that it is indeed vaginosis and not another infection
• Pregnancy: untreated vaginosis during pregnancy can increase the risk of premature birth and complications
• Frequent recurrences (3 or more times in one year): a more in-depth assessment may be necessary to understand why recurrences repeat
• Pain, bleeding, or fever: these symptoms are not typical of simple vaginosis and may indicate another pathology
• Doubt about the diagnosis: if you are not sure it is vaginosis, consult. Yeast infection, vaginosis, STI... Symptoms can be similar.

Never hesitate to consult, even if you feel like you are "bothering" or going to the doctor "too often". Your intimate health deserves attention and respect.

Treating Gardnerella without antibiotics? No, not really. But taking back control of your intimate health by adopting a holistic approach? Yes, absolutely.

Antibiotics are not the enemy. They are an effective tool when necessary. What makes the difference is what you put in place around and after the treatment to prevent your body from falling back into the same imbalance.

You deserve to live without these exhausting recurrences. You deserve to feel good in your body. And you deserve to be given the right information to achieve this.

Take care of yourself.

• Source: Cochrane Review - Antibiotics for bacterial vaginosis.

• Link: Consult the Cochrane meta-analysis

• What the study shows: This reference review confirms that metronidazole and clindamycin are the only treatments with proven efficacy in eradicating Gardnerella. It highlights that no non-antibiotic alternatives (essential oils, vinegar, etc.) have reached a sufficient level of evidence for an acute phase.

• Study: Bacterial Vaginosis: Biofilm Formation and Potential of Probiotics in Prevention.

• Link: Consult the study on PubMed (NCBI)

• What the study shows: The study explains why Gardnerella often returns: it creates a "biofilm" (a sticky protective layer) on the vaginal wall that sometimes resists antibiotics. This justifies the prolonged use of probiotics to "occupy the space" and prevent this biofilm from reforming.

• Study: Probiotics for management of bacterial vaginosis: A systematic review.

• Date: 2017 / Updated 2023.

• Link: Consult the systematic review on PubMed

• What the study shows: This study demonstrates that the addition of Lactobacilli (notably L. rhamnosus and L. reuteri) after antibiotics doubles the chances of remaining in remission at 6 months. They act by producing hydrogen peroxide that "cleans" the remnants of Gardnerella.

• Source: Vaginal douching and the risk of bacterial vaginosis (American Journal of Epidemiology).

• Link: Consult the study on Oxford Academic

• What the study shows: The study proves that internal cleansing increases the risk of vaginosis by 2 to 3 times by eliminating lactobacilli and raising the pH above 4.5, which "invites" Gardnerella to proliferate.

• Source: Bacterial Vaginosis in Pregnancy (MSD Manuals).

• Link: Consult the MSD resource

• What the study shows: Confirms the statistical link between untreated vaginosis and the risk of premature birth or low birth weight, validating the obligation of antibiotic treatment for pregnant women.