Garden plants like roselle and thyme spare the mouth bacteria that antiseptics destroy
Jayanandan M, Veeraraghavan VP, Govindarajan S, Mariyappa Subramani S
Medicinal Plants
Roselle and thyme growing in your garden turn out to be candidates for safer oral care; the plant-derived rinses in this review preserved over 70% of beneficial mouth bacteria that chlorhexidine wipes out.
Your mouth hosts a community of bacteria that keeps you healthy, and strong antiseptic mouthwashes can throw that community badly out of balance. This review looked at 14 studies and found that rinses made from plants like roselle and thyme-related compounds did a good job fighting harmful bacteria without bulldozing the helpful ones. The harshest chemical rinses, by contrast, also knocked out bacteria that help your body regulate blood pressure, which could have effects well beyond your teeth.
Key Findings
Chlorhexidine reduced oral microbial diversity by 40-60% and increased Streptococcus spp. two- to threefold across studies.
Herbal and plant-based rinses (o-cymen-5-ol, StellaLife, roselle) reduced pathogens by 25-40% while preserving 70-80% of commensal bacteria.
Loss of nitrate-reducing bacteria from antiseptic rinses lowered nitric oxide availability, linking oral dysbiosis to potential vascular and cognitive risks.
chevron_right Technical Summary
A systematic review of 14 studies found that chlorhexidine mouthwash causes the most severe disruption to oral bacteria, cutting microbial diversity by 40-60% and raising antibiotic resistance genes. Herbal and plant-based rinses, including roselle and thyme-derived compounds, reduced harmful bacteria by 25-40% while leaving beneficial microbes largely intact.
Abstract Preview
Original paper
Development of oral dysbiosis following use of antimicrobial mouthwashes: a systematic review.
The oral microbiome maintains the oral and systemic health. The extensive use of antimicrobial mouthwashes to control biofilm-related diseases has increased the concerns about their effect on micro...
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Roselle is a species of flowering plant in the genus Sabdariffa that is native to Africa, most likely West Africa. In the 16th and early 17th centuries it was spread to Asia and the West Indies, where it has since become naturalized in many places. The stems are used for the production of bast fi...