Oil of thyme, the essential oil of common thyme (Thymus vulgaris), contains 20–54% thymol. Thyme essential oil also contains a range of additional compounds, such as p-cymene, myrcene, borneol, and linalool. Thymol, an antiseptic, is an active ingredient in various commercially produced mouthwashes such as Listerine. Before the advent of modern antibiotics, oil of thyme was used to medicate bandages. It has also been shown to be effective against various fungi that commonly infect toenails. Thymol can also be found as the active ingredient in some all-natural, alcohol-free hand sanitizers.
A tisane made by infusing the herb in water can be used for coughs and bronchitis.