Garlic Extract Shows Promise as a Natural Mouthwash Ingredient
Garlic has long been known for its potential health benefits, and new research suggests that it could be a powerful ally in the fight against harmful mouth microbes. A recent review conducted by researchers at the University of Sharjah in the United Arab Emirates found that garlic extract may be just as effective as chlorhexidine, the current gold standard for mouthwash ingredients, but with fewer side effects.
The study, which analyzed data from five previous research studies, focused on the bacteria-killing properties of garlic compared to chlorhexidine in humans. The results indicated that mouthwash containing garlic extract was comparable to chlorhexidine-based mouthwash in reducing harmful bacteria in the mouth, particularly Mutans Streptococci (MS), the main culprit behind tooth decay.
According to the researchers, “Garlic extract can serve as a viable alternative to chlorhexidine, especially at higher concentrations.” However, the concentration of garlic extract used in the mouthwash was found to be crucial. While a 0.2-percent chlorhexidine solution outperformed a 2.5-percent garlic solution in reducing MS in saliva, increasing the garlic concentration to 3 percent proved to be more effective.
Despite its potential benefits, garlic mouthwash does come with some side effects, including a strong taste, bad breath, and a burning sensation in the mouth. While these side effects are considered milder compared to those of chlorhexidine, they may still deter some individuals from using garlic-based mouthwash regularly.
One of the main concerns with chlorhexidine is its association with antimicrobial resistance. Previous studies have suggested that prolonged exposure to chlorhexidine can lead to bacteria developing resistance to the chemical, as well as to other antibiotics. This has raised concerns about the need for safer and equally effective alternatives.
Garlic, with its natural antibacterial properties, has been used for centuries as a remedy for various health conditions. The compound allicin, which is found in garlic and is released when the cloves are crushed or chopped, has been shown to inhibit bacterial growth and promote overall health.
While the findings of this study are promising, further research on a larger scale is needed to confirm the effectiveness of garlic extract as a mouthwash ingredient. The researchers emphasize the importance of conducting additional clinical studies with larger sample sizes and longer follow-up periods to validate the results.
The research has been published in the Journal of Herbal Medicine and could pave the way for the development of a natural, garlic-based mouthwash that not only fights bacteria but also contributes to improved oral health.

