Calamus oil, also known as sweet flag oil, is an essential oil derived from the root of the Acorus calamus plant. It has been used in traditional medicine for centuries and has a variety of therapeutic properties. Other synonyms for calamus oil include sweet flag oil, cane oil, flag root oil, and rat root oil. Sweet flag oil is a natural stimulant that can help improve memory, reduce anxiety, and aid digestion. Cane oil is popularly used in aromatherapy and massage therapy because of its calming and soothing effects. Flag root oil has antiseptic properties that make it useful in treating wounds and infections. Rat root oil is believed to have aphrodisiac effects and is used in traditional Indian medicine for sexual health.