ActiveHerb's Guang Ci Tang presents Nuan Gong Yun Zi Pian or FertiAssist comes in three bottles, each containing 200 tablets. Nuan Gong Yun Zi Pian contains within it the classical formula Four Substance Decoction: Dang Gui (Chinese Angelica root), Bai Shao (white Peony root), Shu Di Huang (processed Rehmannia root) and Chuan Xiong (Szechuan Lovage rhizome). Si Wu Tang is a fundamental formula used to tonify the blood according to TCM or Traditional Chinese Medicine. This is a well-balanced and effective formula which is indispensable in supporting female reproductive health in cases of cold and deficiency. ActiveHerb's FertiAssist uses a 5:1 concentration and represents the most potent form of Nuan Gong Yun Zi Pian (Wan) available; in which one tablet is equal to 1 gram of raw herb. Uses minimal fillers and binders, lab tested to ensure potency and no contamination, and manufactured in a certified GMP facility with independent lab reports posted on their website.