The leaves contain about 5.65% protein, 1.2% fat, 11% carbohydrate, 1.7% ash, 74.5% water from <pfaf.org>
It contains the bioflavonoids: quercetin and kaempferol and vanillic, caffeic and gallic acid along with tannins and saponisides. Salad burnet also contains vitamins C, A and some of the B-complex ones, along with the minerals iron and potassium. from <herbs-treatsandtastes>