Sage leaf has been sundried to preserve its natural goodness Rapid release capsules Sage has one of the longest histories of use of any culinary herb. It is thought that the presence of volatile oils within sage are responsible for its beneficial properties. Sage leaf has been sundried to preserve its natural goodness Rapid release capsules Sage has one of the longest histories of use of any culinary herb. It is thought that the presence of volatile oils within sage are responsible for its beneficial properties.