Yarrow is classified by herbalists as one of the bitter herbs. Other herbs in this category include Centaurium, Gentian and Dandelion. These have the common ability to stimulate digestive processes, balancing gastric juice secretion and improving the breakdown of food. Bitters stimulate the taste buds. This triggers a reflex nerve action which increases the flow of saliva and stomach enzymes. The sum total of this is an improvement in the digestive function 100g of Yarrow Complex typically contains the tinctures of yarrow (29.5g), dandelion (22g), lemon balm (18.5g, gentian (17g), blessed thistle (7g), Adults: 20 to 30 drops in a little water three times daily before meals. Children (2-12 years): One drop per year of age twice daily, in a little water. Do not use if you are allergi.