Yin Chiao (Yin Qiao) provides support to immune system defenses in the winter months. Yin Chiao supports not only the immune system, but also modulates the strength of immune system responses.* Yin Chiao is also very safe with no known major adverse effects. There are few formulas with the traditional use history of Yin Chiao, and investigation is beginning to understand the mechanisms of its effects. Yin Chiao may be used in conjunction with Western approaches to support systemic health.*