Phentermine and Adderall are both prescription medications, but they serve different purposes. Phentermine is primarily used as an appetite suppressant for weight loss, working by stimulating the central nervous system to reduce hunger. Adderall, on the other hand, is prescribed for ADHD and narcolepsy, improving focus, attention, and impulse control. While both drugs have stimulant effects, Phentermine is focused on weight management, whereas Adderall targets cognitive and behavioral symptoms. Choosing the right medication depends on individual needs—weight loss versus managing ADHD or sleep disorders—and should be based on a healthcare provider’s evaluation of your health and goals.