MGO 400+ 250g Manuka Honey contains a guaranteed minimum of 400mg/kg methylglyoxal, the key compound responsible for Manuka Honey's unique properties. Manuka Honey is derived exclusively from the Leptospermum scoparium plant that only grows in New Zealand. This plant blooms white flowers in the springtime that are favored by honey bees. Noted for its distinct aroma, the nectar from Manuka flowers is used to make this dark and creamy delicacy. Methylglyoxal is the distinct compound found in Manuka Honey. MGO rating is given to Manuka Honey to provide an accurate assessment of Methylglyoxal content (mg/kg) in the product. This knowledge allows clear determination of the honey’s unique benefits as the amount of Methylglyoxal increases with the higher MGO number. Compared to other measurement systems, the MGO rating is straightforward and simple.Quality assurance:All of Manuka Health's MGOTM Manuka Honey products are scientifically tested and verified to ensure you are getting consistent quality. Every batch is subjected to laboratory tests that measure various quality parameters including Dietary Methylglyoxal content. Great care is taken to ensure that the Methylglyoxal is maintained from the bee-hive to the finished product so you do not lose any of the valuable properties of this remarkable honey.