MGO stands for methylglyoxal, the naturally occurring compound that makes Manuka honey so special. ... Every jar of Manuka Health MGO Manuka Honey is tested and certified for natural MGO content. The MGO number tells you how much MGO is in your jar of honey – simple.

Anything above 100mg/1kg is considered antibacterial. In turn, this makes easy for consumers to understand that an MGO 100+ Manuka honey contains at least 100mg of methylglyoxal.

The strength of Manuka Doctor Manuka Honey is measured using the MGO (Methylglyoxal) grading system from 30 MGO to 840 MGO. Scientists generally agree that MGO is the best way to establish a honey's antimicrobial (bacteria-killing) strength.

Manuka honey comes in a range of MGO ratings. The higher the number on the label, the better the health benefits and anti-bacterial properties are.