Manuka Honey Should Have at Least 100+ MGO for Beneficial Effects

MGO (methylglyoxal) is the key bioactive compound in manuka honey that provides its antibacterial properties. For general wellness, 100-300 MGO is sufficient, while 400+ MGO offers stronger therapeutic benefits. Higher ratings (700+ MGO) are ideal for targeted health support but may not be necessary for daily use.

Understanding MGO Ratings in Manuka Honey

  • MGO 30-80: Low activity; minimal antibacterial effects. Best for culinary use.
  • MGO 100-300: Moderate activity; supports immune health and digestion.
  • MGO 400-700: High activity; used for wound care, sore throats, and gut health.
  • MGO 800+: Very high activity; medical-grade, often used for severe infections or topical applications.

MGO vs. UMF: What's the Difference?

MGO measures methylglyoxal content directly, while UMF (Unique Manuka Factor) is a quality rating combining MGO, leptosperin, and DHA. Use this conversion as a guide:

  • UMF 5+ ≈ MGO 83
  • UMF 10+ ≈ MGO 263
  • UMF 15+ ≈ MGO 514
  • UMF 20+ ≈ MGO 829

Comparison: MGO Levels by Use Case

Use Case Recommended MGO Frequency Cost (Relative)
Daily immune support 100-300 MGO 1-2 tsp daily $
Sore throat relief 400-600 MGO 1 tsp 2-3x daily $$
Wound healing (topical) 700+ MGO As needed $$$

Factors Affecting MGO Potency

  • Harvest time: Later-season honey has higher MGO due to increased nectar concentration.
  • Storage: MGO degrades with heat/light; store in a cool, dark place.
  • Processing: Raw, unpasteurized honey retains more MGO than heated varieties.
  • Floral source: Only honey from Leptospermum scoparium (manuka) contains significant MGO.

How to Choose the Right MGO Level

  1. Assess your goal: General health? Opt for 100-300 MGO. Targeted relief? Choose 400+.
  2. Check certification: Ensure the label lists independent MGO testing (e.g., ISO 17025).
  3. Start low: If new to manuka honey, try 100-200 MGO to gauge tolerance.
  4. Consult a professional: For medical uses (e.g., wounds), seek guidance on MGO 700+.

Potential Side Effects of High MGO

  • May cause digestive discomfort (nausea, diarrhea) if consumed excessively (>2 tbsp/day).
  • Blood sugar impact: High MGO honey is still sugar; monitor intake if diabetic.
  • Allergic reactions: Rare but possible; discontinue if rash or swelling occurs.