Is it suitable to drink Siwu Decoction during pregnancy preparation? The pregnancy preparation stage refers to the stage when couples are preparing to have a child. The importance of this stage cannot be ignored. Siwu Decoction is a traditional Chinese medicine prescription, which consists of four traditional Chinese medicines: Angelica sinensis, Rehmannia glutinosa, Ligusticum chuanxiong, and white peony root. It is widely used to tune