Goji berries are one of the most well known Chinese herbs in the US. Used for over 2000 years in China, they were first mentioned in the Shen Nong Ben Cao Jing, the oldest known book on Chinese herbs in 200 BC. They are prized for their ability to tonify blood and yin without causing stagnation. Consumed daily in China as a food and herbal medicine, goji berries are revered for their anti-aging properties. They are used in many beauty tonics.