Adderall vs Vyvanse
Official answer. The main difference between Adderall and Vyvanse is that Adderall is a mixture of four different kinds of amphetamine salts while Vyvanse only contains one type of amphetamine salt, called lisdexamfetamine. Lisdexamfetamine gets converted into dexamphetamine once it is in the body. The four amphetamine salts that …