CBD Could Effectively Treat Common Vaginal Infections, Study Concludes

Newly published research on cannabidiol (CBD) suggests that the popular marijuana component could be a promising treatment for a common type of vaginal infection.

The report focuses on the bacterium Gardnerella vaginalis, which is found naturally in the vagina but can also cause vaginosis when out of balance with other microbes. In laboratory tests, CBD demonstrated antibacterial and antioxidant effects that weakened G. vaginalis and eliminated communities of the bacteria known as biofilms.

“Our study shows that CBD exhibits antibacterial and antibiofilm activities against G. vaginalis clinical isolates,” the new paper says, “and is thus a potential drug for the treatment of vaginosis caused by this bacterium.”

The article was published this month in a special issue of the journal Antibiotics dedicated to “Antimicrobial and Antibiofilm Activity by Natural Compounds.” It was authored by a four-person team from The Hebrew University of Jerusalem and Hadassah-Hebrew University Medical Center, also in Jerusalem, Israel.

“Importantly, CBD not only prevented the biofilm formation of G. vaginalis but also reduced the metabolic activity and biofilm biomass of preformed, mature biofilms,” authors wrote, adding that “the ability of the drug not only to prevent biofilm formation but also to act on preformed mature biofilms” constitutes an “important requirement for the successful treatment” of vaginosis caused by the bacterium.

“CBD has antibacterial and antibiofilm activities against the Gram-variable G. vaginalis, which is an opportunistic pathogen associated with bacterial vaginosis.”

G. vaginalis is not the only bacterium that can cause vaginosis, the paper acknowledges, but among 30 tested species, it was “found to be the most common and virulent species.”

The team noted that their research appears to be the first inquiry into CBD’s effects on the bacterium.

While the findings are promising, the team noted that a chief limitation of the study is that it’s an in vitro study—examining the effects of CBD on bacteria in a petri dish, not a living organism.

“Further studies,” their paper says, “should focus on the in vivo efficacy of CBD in treating bacterial vaginosis and detecting any possible toxicity in animal models before conducting human clinical trials in the future.”

The new study adds to a growing body of research indicating that cannabinoids might be useful in antibacterial applications.

A review published last year, for example, found that cannabis oil may help promote the healing of skin wounds, finding that it offers “promising benefits” despite a need to better optimize product formulations.

The report, by researchers at universities in India and Thailand, looked specifically at how cannabis oil can reduce so-called “reactive oxygen species” (ROS) during the healing of wounds. Those chemicals “play a crucial role in would development by causing cell and tissue damage,” it explains.

“Additionally, the antibacterial and analgesic properties of cannabis contribute to reducing the microbial load and minimizing the complications associated with chronic wounds,” authors of that study wrote, “thereby enhancing the overall healing efficacy.”

Months earlier, a separate review said that the “complex interaction between phytocannabinoids and biological systems offers hope for novel treatment approaches,” laying the groundwork for a new era of innovation in cannabis-based medicines.

It specifically noted that compounds such as CBG and CBN appear to have antibacterial effects and said that “antimicrobial and anti-inflammatory properties make them valuable candidates for combating antibiotic resistance and modulating inflammatory pathways.”

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Photo courtesy of Mike Latimer.