Displaying 3 results of Taurine Impurities Taurine is an amino sulfonic acid that is commonly used in energy drinks and supplements. However, it is possible for taurine to contain impurities, which can include residual solvents, heavy metals, and other contaminants. These impurities can be harmful to human health if consumed in high amounts, so it is important for manufacturers to carefully monitor the purity of their taurine products.