Question: what is the difference between dextroamphetamine and lisdexamfetamine?
Answer: Both drugs are derivatives of amphetamines. The difference between the drugs is Adderall contains amphetamine salts (amphetamine and dextroamphetamine), whereas Vyvanse contains lisdexamfetamine, which the body converts to dextroamphetamine before it is active, meaning it's a "prodrug."