Dopamine is completely safe.
 Although dopamine is also found in many types of food, it is incapable of crossing the bloodbrain barrier that surrounds and protects the brain
 Other drugs that enhance dopamine function, such as bromocriptine and pergolide, are also sometimes used to treat Parkinsonism, but in most cases L-DOPA appears to give the best trade-off between positive effects and negative side-effects

