Mānuka Honey, Throat Soother What does ManukaGuard Throat Soother do? ManukaGuard’s MGO 200 Throat Soother honey is the optimal strength to soothe dry throats and hoarseness. To be recognized and certified as Mānuka honey by the New Zealand government, the honey is tested for five specific standards. All five attributes must be met to pass the Ministry for Primary Industry’s requirements to be labeled as either mono-floral Mānuka or multi-floral Mānuka for exportation. These tests also verify that the Manuka honey has not been adulterated and the MGO content is stated on the product label.