Gardnerella Vaginalis: Symptoms, Risks, and Treatment

What Is Gardnerella Vaginalis?

Gardnerella vaginalis is a type of bacteria naturally present in the vaginal ecosystem, but when it multiplies excessively, it can lead to a condition known as bacterial vaginosis (BV).

This imbalance occurs when the beneficial lactobacilli that maintain vaginal acidity and protect against infection are reduced. Once this balance shifts, the vaginal environment becomes less acidic, allowing Gardnerella and other bacteria to thrive.

BV itself is not strictly a sexually transmitted infection (STI), yet it is more commonly observed among sexually active women. If left unaddressed, recurrent episodes can sometimes contribute to complications involving pregnancy or reproductive health.

What Can Cause Gardnerella Vaginalis Overgrowth?

An increase in Gardnerella vaginalis usually occurs when the natural bacterial harmony of the vagina is disrupted. A variety of internal and external influences can cause this shift, including:

• Engaging in sexual activity without protection or with new partners
• Taking antibiotics that disturb normal bacterial flora
• Hormonal changes during menstruation, pregnancy, or menopause
• Frequent vaginal douching or use of scented hygiene products

Although it is not categorised as a classic STI, the condition appears more frequently in individuals whose vaginal microbiota changes due to sexual exposure. It can also arise in those who are not currently sexually active, as the underlying cause relates to microbial imbalance rather than transmission alone.

How Is Gardnerella Vaginalis Infection Treated?

Treating Gardnerella vaginalis aims to re-establish the healthy bacterial balance of the vagina and eliminate overgrowth.

Antibiotic therapy remains the standard approach, most often using metronidazole or clindamycin, which can be taken orally or applied intravaginally depending on clinical assessment.

For recurrent or persistent cases, probiotics may help support the regrowth of beneficial bacteria and reduce recurrence rates. Reviewing hygiene habits, sexual practices, and medication use can also help identify triggers and lower future risk. Follow-up visits are also recommended if symptoms persist or reappear after treatment completion.

Cost of Gardnerella Vaginalis Testing & Treatment

Testing and treatment for bacterial vaginosis linked to Gardnerella vaginalis are available at Singapore Women's Clinic, with the prices as follows:

We also offer a wide range of STD testing options and women's health services. Female doctors are available upon request for added comfort and privacy during consultations.

For appointment scheduling or further details, please contact our clinic directly.

How Can Gardnerella Vaginalis Infection Be Prevented?

Preserving a balanced vaginal microbiome is key to preventing Gardnerella overgrowth. Practical steps include:

• Avoid vaginal douching, as it disrupts natural bacterial defences.
• Use condoms consistently during sexual activity to maintain bacterial balance.
• Complete any antibiotic course exactly as prescribed to minimise disruption of healthy flora.
• Choose breathable cotton undergarments and avoid prolonged dampness in the genital area.

Simple lifestyle measures combined with timely screening can help maintain vaginal health and reduce the likelihood of recurrence.