I saw a psychologist and was diagnosed w/adhd. He suggested Adderall (dextroamphetamine and racemic amphetamine) but asked me to research before making a decision. Can it be used in a safe way?

Certainly. See your. Primary physician for a physical exam with baseline blood pressure, weight & height. Give your doctor any history of heart problems in your family & yourself & share your psychological evaluation. Your doctor may refer you to an adult psychiatrist for medication management. See chadd.Org for tips on medications, therapy & environmental manipulations for optimal multimodal treatment of adhd.
ADHD? Adderall (dextroamphetamine and racemic amphetamine) & other stimulants are safe, if used under supervision by a psychiatrist & for correct diagnosis.