Bullet Points : 1 > Centuries Of Use. Yin Chiao Has Been A Staple Of Traditional Chinese Herbalists And Acupuncturists, And A Household Name In China, For Hundreds Of Years. It Was Developed During The Qing Dynasty (1644-1911), And Is One Of The Most Valued Of All Classic Chinese Herbal Formulas 2 >Suggested Use. 1 Tablets Twice Daily Between Meals 3 >Well Made Supplement. Contains Yin Chiao Extract Complex 4 >Manufactured In The Usa. Our Facility Is Located In Scotts Valley California Description : Planetary Herbals Yin Chiao Classic 450 Mg - Immune Formulas For Seasonal Support - 60 Tablets