The rock rose grows in Mediterranean regions and is an ancient and a very strong medicinal plant. The first indications of the use of the rock rose for medicinal purposes date back to the 4th century BC.In 2009 the first clinical studies of the rock rose were carried out. Researchers from the Charité in Berlin initiated a placebo-controlled study of 160 patients with an upper respiratory infection. They received a rockrose extract that contains a high percentage of polyphenols and has already proven itself in the past as a strong antiviral agent against flu. Most of the symptoms as well as CRP - the inflammation marker –has decreased significantly in the rockrose patients group, while in a placebo group there was a hardly noticeable improvement.