Displaying 6 results of Cholecalciferol Impurities Cholecalciferol is a type of vitamin D that is used to treat and prevent vitamin D deficiency. However, during its production, impurities may be introduced that can affect the purity and quality of the final product. These impurities can include residual solvents, heavy metals, and other related substances. It is important to monitor and control the levels of impurities in cholecalciferol to ensure its safety and efficacy for human use.