Displaying 17 results of Calcipotriol Impurities Calcipotriol is a synthetic vitamin D3 analog used in the treatment of psoriasis. However, the manufacturing process of calcipotriol may result in the formation of impurities, which are unwanted substances that can affect the quality, safety, and efficacy of the drug. Common impurities in calcipotriol include related substances, residual solvents, and heavy metals. It is important to monitor and control these impurities to ensure the purity and safety of the drug.