Natural Matter has great pleasure in introducing Comvita UMF 15+ Active Manuka Honey 250g . You can choose a Factor 10+ or 15+ Manuka Honey with even stronger antibacterial activity. UMF is a Registered Trademark and indicates the antibacterial strength of the UniqueManuka Factor.Extra strength honeys with a guaranteed UMF of 10+ or 15+. The Active 10+ has two and a half times the killing power of standard antiseptic, Active 10+ & 15+ are effective both internally and externally . Please see more in the Natural Matter health and fitness shop for the entire Comvita range. If you have any questions regarding this product please contact info@naturalmatter.co.uk and we will try our best to help you.