Herbal Supplement With Licorice, Forsythia & Slippery Elm Plus Echinacea and Cloves A Dietary Supplement Botanicals/Herbs Family Owned Since 1968 GMP Quality Assured Bee Propolis is collected from beehives and has naturally occurring flavonoids. Bees collect the Propolis from the resin of certain select trees and use it to line the hive. This substance is believed to be responsible for the sterile, healthy state of the colony.