In vitro testing has shown activity against common oral bacteria including Streptococcus mutans, Streptococcus mitis, and Actinomyces naeslundii.

The Kiwiherb Mānuka Mouthwash is a 100% natural herbal mouthwash made from New Zealand native mānuka and tānekaha, traditionally used to help fight odour-causing bacteria associated with bad breath. Naturally flavoured with aniseed, liquorice, and peppermint oil, it leaves the mouth feeling fresh and clean. Made in New Zealand and packaged in glass. Contains alcohol as no more than 24% v/v ethanol. Always read the label and follow the directions for use.