Can taking unprescribed adderall (dextroamphetamine and racemic amphetamine) everyday be bad?

YES: Adderall (dextroamphetamine and racemic amphetamine) is a dopaminergic and noradrenercic medication. If you do not have a disorder involving decreased levels of these compounds, then you are creating excessive levels of these neurotransmitters. Numerous conditions can ultimately result including hypertension, anxiety, paranoia, psychosis. Cardiac arrhythmias, headaches, increased risk of stroke, etc.