Honey New Zealand UMF15 Manuka Honey has a special antibacterial activity called Unique Manuka Factor UMF. Laboratory research has shown that the UMF & hydrogen peroxide found in this honey kills bacteria & fungi found in wounds & stomach ulcers. UMF 15 & above has very high activity levels & therfore considerd excellent for therapeutic usage as well as used to help maintain a healthy immune & digestion system. All Honey New Zealand UMF products have been tested & certifie