Manuka honey has become one of the most sought-after products in Irish health shops over the past decade. Produced exclusively in New Zealand and parts of south-east Australia from the nectar of the Manuka bush (Leptospermum scoparium), it commands a premium price for good reason β its unique antibacterial properties are well-documented and set it apart from all other honey types.
But with premiums come imitations. Understanding how to read Manuka honey labels, what the ratings actually mean, and what genuine Manuka can and can't do is essential for any Irish buyer.
All honey has some degree of antibacterial activity, primarily due to hydrogen peroxide produced by the enzyme glucose oxidase. What makes Manuka exceptional is an additional compound: methylglyoxal (MGO).
MGO is naturally present in manuka nectar in high concentrations and is responsible for Manuka honey's non-peroxide antibacterial activity β an activity that, crucially, is not neutralised by heat, dilution or the body's own catalase enzyme (which breaks down hydrogen peroxide). This makes Manuka's antibacterial action more stable and persistent than that of regular honey.
The higher the MGO concentration, the more potent the antibacterial activity. This is the basis of Manuka's premium pricing and reputation.
Navigating Manuka honey labels can be confusing. Several different rating systems are used:
The UMF grading system is a comprehensive quality mark managed by the UMF Honey Association of New Zealand. It measures not just MGO but also two other markers of genuine Manuka honey: Leptosperin (a compound found only in manuka nectar) and DHA (dihydroxyacetone, a precursor to MGO). A product with a UMF rating has been independently tested and certified as authentic Manuka honey.
UMF ratings and their approximate MGO equivalents:
Some brands display only the MGO (methylglyoxal) content in mg/kg. This tells you the MGO concentration directly. MGO 250+ is a popular general-use choice; MGO 400+ is often used for more specific wellness purposes; MGO 800+ is the highest readily available in Irish health shops.
Manuka honey has a long history of traditional use in New Zealand, particularly in MΔori medicine where manuka was used for its healing properties. Contemporary interest centres on:
This is the most strongly evidence-supported application for Manuka honey. Medical-grade Manuka honey (licensed as Medihoney) is used in clinical settings for wound dressings, particularly for hard-to-heal wounds and infected ulcers. The mechanism involves MGO's antibacterial activity, honey's low pH, osmotic effect (drawing water out of bacteria), and hydrogen peroxide content working together.
For at-home use, applying a thin layer of high-UMF Manuka honey to minor cuts, burns, spots or cold sores is a traditional practice with some evidence support. It should not replace proper wound care for significant injuries.
Manuka honey is traditionally taken by the spoonful (directly, not dissolved in hot drink) for sore throats, mouth ulcers and oral discomfort. The direct contact with throat and mouth mucosa allows its antibacterial properties to act locally. Some research suggests manuka honey may inhibit Streptococcus mutans, the bacteria most associated with dental caries β though this doesn't mean sweet honey should be used liberally for dental health.
Manuka honey is traditionally used for digestive comfort β particularly for conditions like gastritis, acid reflux, and gastric ulcers associated with H. pylori (Helicobacter pylori). Some laboratory research supports Manuka honey's inhibitory effect on H. pylori in vitro, though clinical evidence in humans is more limited. Taking a teaspoon 20 minutes before meals is a traditional approach.
Some research suggests manuka honey may support the immune system through its antioxidant content (phenols, flavonoids) and potentially through modulating gut microbiome composition. It's a popular addition to a winter wellness regime.
Some people use local raw honey (though Manuka is from New Zealand, not local) for seasonal allergies on the theory that exposure to local pollen helps desensitise. This is popular folk medicine but limited in clinical evidence.
Given the global popularity and premium pricing of Manuka, adulteration is a real issue. More Manuka honey is sold globally each year than New Zealand produces. To ensure authenticity:
Find authentic Manuka honey in various UMF and MGO ratings at The Honey Pot Health Store
Shop at The Honey Pot β π 052-612 1457