Marjoram is a member of the mint family, Lamiaceae, and is used in cooking as a culinary herb.
With a long history of use for medicinal purposes, marjoram is a common herb used in animal nutrition today. With antimicrobial properties, when included in feed of multiple species, it may reduce the risk of certain infections, while allowing the proliferation of beneficial bacteria in the gut. In poultry, marjoram may help as an egg laying stimulant or as a natural growth promoter. In horses, marjoram may be beneficial as a digestive aid or as a support for cardiovascular health.