The Darentang Drugstore is one of the renowned time-honored brands in Tianjin. It was originally a branch of Yuejialaopu, which itself was derived from the Tongrentang. Thus, its experiences of Pharmacy and business practices are the same of those of the Tongrentang. Its main products are Cow-bezoar Bolus for Restoration (Angong Niuhuang Wan), Venis and Artery Relieving Pills(Huoluo Dan), and White Phoenix Bolus of Black-bone Chicken ( Wuji Baifeng Wan).