Manuka Health MGO 550+ Manuka Honey (250g). Ultra premium MGO 550+ Manuka Honey direct from New Zealand.. - 100% New Zealand Pure Manuka Honey. - MGO™ content guaranteed. - Traceability guaranteed from beekeeper to jar. Harvested over 4 short weeks each year, MGO™ Manuka Honey is sustainably sourced from beehives in remote and pristine areas of New Zealand with full traceability from beekeeper to jar.. This delicious, smooth and creamy honey is our highest in strength with a minimum of 550mg of MGO™ per kg.. The unique benefits of Manuka Honey are well documented and are scientifically tested. However, it is important to know that the level of methylglyoxal can vary greatly in Manuka Honey, so you want to be sure you know what you’re getting. That is why at Manuka Health we test and certify our MGO™ Manuka Honey to guarantee the level of methylglyoxal present, as indicated on the label.