A tincture is a liquid herbal extract made by soaking herbs in solvents such as pure grain alcohol, which helps extract the active ingredients from the herbs. The liquid is then pressed out and the herbs discarded. A tincture can be made of one herb or a combination of herbs.
Although herbal tinctures with grain alcohol are most common, some manufacturers remove the alcohol and add glycerin to make the tincture alcohol-free. Herbal tinctures are sold in health-food stores, some drug and grocery stores, and online.