FORT WAYNE, Ind.--(BUSINESS WIRE)--Historically, black elderberries were among the most regarded folk remedies for coughs, colds, and flu. Now modern science has authenticated these therapeutic properties. In February 2011, researchers at Justus-Liebig University in Geissen, Germany reported that a concentrated liquid extract of black elderberries (Sambucus nigra L.), commercially available as Rubini® - Elderberry Extract 3.2%, inhibited the growth of influenza A and B viruses and bacteria associated with upper respiratory tract infections. Artemis International, Inc.—the nation’s experts in dark berry ingredients—has been actively supplying the U.S. with this elderberry extract for the past 16 years for its immune health benefits.