Comvita Manuka Honey UMF™ 10+ is a Manuka honey with a Unique Manuka Factor of 10+ and with MGO 263+. MGO stands for Methylgloxal and measures the honey’s special property – the higher the number, the greater the honey’s properties. This Manuka honey is made in New Zealand and is sourced from the nectar of the Manuka bush (Leptospermum scoparium), which is native to New Zealand.