I'm not sure what you mean by you 'got your hands on some Adderall.' I would not advise taking prescription medication without a valid prescription and suprervision by a physician. Adderall is a controlled substance which means it holds the potential for abuse. It is also illegal to be taking prescription medications not prescribed for you.
Adderall is indicated for the treatment of attention deficit disorder, not depression.
Adderall XR Prescribing Info