Emotionally, this herbaceous oil is known to be one of the most sedating, calming and warming of all the essential oils. It releases nervous tension and can often induce hyperactive people to slow down. The physical benefits of marjoram include the relief of headaches, pain reduction of sore muscles and joints and the ability to ease cramping, including menstrual cramps. Marjoram essential oil is also beneficial to the treatment of respiratory illnesses, including colds, bronchitis, asthma and sinusitis. It can combat insomnia and migraines. Marjoram's therapeutic properties include antiviral, antiseptic, analgesic, fungicidal and diuretic.