Displaying 11 results of Amphetamine Impurities Amphetamine impurities refer to substances that are present in amphetamine drugs, other than the intended active ingredient. These impurities can be the result of incomplete synthesis or contamination during production, and can have negative effects on the drug's purity and potency. Impurities can also increase the risk of side effects or harm to the user. It is important for drug manufacturers to closely monitor and control the levels of impurities in amphetamine products to ensure their safety and efficacy.