A traditional Chinese medicine (TCM) containing Radix rehmanniae praeparata, Radix paeoniae alba, Radix astragali, Radix ginseng, Radix angelicae sinensis, and Rhizoma chuanxiong, with potential immunomodulating activity. Although the exact mechanism of action through which Sheng-Yu-Tang exerts its effect has yet to be fully elucidated, upon oral administration, this TCM may have a beneficial effect on the immune system.