Reviews | Manuka Honey Iaa15+ Comptoirs & Compagnies - New Zealand The IAA15+ index is the optimal activity index. It corresponds to the honey used for laboratory tests by the Honey Research Unit at the University of Waikato. These honeys have a minimum methylglyoxal level of 514 mg/kg. | Recommendations for use This optimal activity honey can be used in essere consumed daily or for more frequent use mirato.| 250g jar format.