Ardisia crenata is an evergreen shrub, native to east and southeast Asia and parts of India, which grows as an understorey forest species. It has attractive red berries, which has led it to be widely used as an ornamental plant in shady conditions. (From the Invasive Species Compendium.)
However when researching coralberry I came up with the species Symphoricarpus orbiculatus from the Honeysuckle Family.
The species Ardisia crenata contains a substance known as FR900359 which could be used to treat bronchospasm, asthma, and several other respiratory diseases according to the University of Bonn. Some believe it could be as effective as some of the selective beta blockers for the lungs.
More studies need to be done.