This Elderberry syrup is a Tonic. Tonic are good for you to improve your health. Elderberry is good for colds and flu season. You take one tablespoon every day, if you are giving this Tonic to a child one teaspoon is all that they need to help their immune system fight off whatever infection you or them might be having. The average shelf life for any Tonic given to you by DWZ And Mystics is two months.