Flex (SPR) is formulated to relieve pain from bone spurs and joint stiffness arising from overuse. According to theories in traditional Chinese medicine, bone spurs form as the result of repetitive use and are diagnosed as stagnation of blood and phlegm.

Po Bu Zi Ye (Folium Cordia Dichotoma) regulates qi circulation and relieves pain. Unbeknownst to most practitioners, it is one of the most effective herbs in the Chinese Materia Medica to treat bone spurs. Mo Gu Xiao (Caulis Hyptis Capitatae), Liu Zhi Huang (Herba Solidaginis), and Huang Jin Gui (Caulis Vanieriae) have anti-inflammatory and analgesic effects and are often used to treat acute pain associated with traumatic injuries or sprains and strains. Da Ding Huang (Caulis Euonymi) further reduces inflammation and relieves pain. Ru Xiang (Gummi Olibanum), Mo Yao (Myrrha), and Dang Gui (Radix Angelicae Sinensis) have potent effects on moving blood, dispersing blood stagnation, and relieving pain. Jin Yin Hua (Flos Lonicerae Japonicae), Bai Zhi (Radix Angelicae Dahuricae), Zhe Bei Mu (Bulbus Fritillaria Thunbergii), Zao Jiao (Fructus Gleditsiae), and Zao Jiao Ci (Spina Gleditsiae) break up phlegm that is obstructing the channels and joints to restore proper qi and blood circulation. Chen Pi (Pericarpium Citri Reticulatae) regulates qi, while Fang Feng (Radix Saposhnikoviae) disperses wind and releases pain lodged in peripheral levels of the body. Tong Cao (Medulla Tetrapanacis) drains the accumulation of dampness and phlegm from the body via urination. Lastly, Gan Cao (Radix et Rhizoma Glycyrrhizae) relieves pain and harmonizes the formula.

In summary, Flex (SPR) is an effective formula with immediate and long-term therapeutic benefits.