Manuka honey is produced in New Zealand by bees that pollinate the native manuka bush. Advocates say it treats wound infections and other conditions.

Also, science says about using manuka honey as a medicine.

In manuka honey, MG comes from the conversion of another compound -- dihydroxyacetone -- that is found in the nectar of manuka flowers.

MG is thought to give manuka honey some of its antibacterial power. The higher the concentration of MG, the possibly stronger the antibiotic effect. 

Honey producers have developed a scale for rating the potency of manuka honey. The rating is called UMF, which stands for Unique Manuka Factor.

The UMF rating is thought to correspond with the concentration of MG and other compounds. Not all honey labeled as manuka honey contains significant levels of antibacterial factors.