Royal jelly is a yellow, gooey substance that is produced by honeybees. It is the food that is fed to young bees in the hive, and it is also used to produce queen bees. Royal jelly contains high levels of protein, vitamins, and minerals, and it has been shown to have beneficial effects on human health. It has been used as a natural remedy for a variety of conditions, including allergies, arthritis, and asthma.