Catnip is a source of vitamins A, C and the B complex and also contains magnesium, manganese, phosphorus, sodium and a trace of sulphur. Fennel contains potassium, sulphur and sodium. This product also contains glycerine, a natural component of fats and oils, and a natural product of digestion. Nature’s Sunshine’s method of extraction produces herbs that are easily assimilated, highly concentrated and preservative free. Liquid herbs can be taken straight from the dropper or used in tea.