Traditionally used by Native Americans to shorten the duration of colds and flus. The flowers ad roots used in this tincture were grown locally by women at Lancaster Farmacy. When the flowers are harvested early, they contain Arabinogalactin Proteins and Polysachharides. These chemicals support ongoing immune function and are best-used long term for supporting the immune system. The roots harvested in the fall contain large amounts of Alkylamides and support a healthy inflammatory response in the sinuses and are best used at onset, not for long-term use.