There is already a pretty hefty trade in counterfeit manuka honey, and an organization called the UMF Honey Association grades the amounts of various antibacterial agents in any individual honey.

The honey used to treat wounds is medical-grade honey. It is specially sterilized and prepared as a dressing. So the jar of Manuka honey in the pantry shouldn’t be part of your first aid kit.

Manuka Health chief executive Kerry Paul says while all honey was to some extent a blend ... to be labelled as manuka then it should have a grade of 10 plus or 300mg/kg of methylglyoxal.

SAN FRANCISCO ― A medical grade honey from New Zealand (Manuka), which is known to be effective in wound healing, does not reduce pain from radiation esophagitis more effectively than standard ...