«Like cocaine, Ritalin is a powerful stimulant that increases alertness and productivity. Ritalin and cocaine also look and act very much alike. They have a similar chemical structure, and both increase dopamine levels in the brain. They do this by blocking a dopamine transporter protein, which normally takes up dopamine from the synapse.
ADHD children are typically taken off of Ritalin when they reach adulthood. Interestingly, these individuals seem to be more prone to cocaine addiction. Why is that? Because Ritalin and cocaine are similar drugs, it’s possible that ADHD adults are unknowingly using cocaine as a replacement for Ritalin.»