Displaying 4 results of Methylphenidate Impurities Methylphenidate is a commonly prescribed medication for treating ADHD and narcolepsy. However, the manufacturing process of methylphenidate can lead to the formation of impurities, which are undesirable byproducts. These impurities can affect the purity, potency, and safety of the drug. Therefore, it is crucial to monitor and control the levels of methylphenidate impurities to ensure the effectiveness and safety of the medication.