Thyme essential oil has been used therapeutically since 1589, while it has been included in many pharmacopeias since 1949. -The European Medicines Agency (EMA) describes its expectorant, anti-inflammatory, antibacterial and antiseptic properties. -Ιts benefits contribute to the treatment of upper respiratory tract infections, bronchitis symptoms and cold coughs. -Its therapeutic effect is attributed to thymol, the main active ingredient of the essential oil.