1839 Manuka Honey UMF 5+ MGO 83+ 400g is a premium, raw, and unpasteurized honey sourced from the nectar of Manuka flowers in New Zealand. It is carefully harvested to ensure it retains its natural bioactive properties, offering a range of health benefits.UMF 5+: The Unique Manuka Factor (UMF) measures the purity and quality of the honey. A UMF 5+ rating indicates a low yet significant level of antibacterial potency.MGO 83+: Methylglyoxal (MGO) is the compound in Manuka honey known for its antimicrobial properties. An MGO 83+ rating signifies a moderate level of this active ingredient, which supports its health benefits.