D-DOPA


-DOPA is similar to -DOPA, but with opposite chirality. Levo- and dextro- rotation refer to a molecule's ability to rotate planes of polarized light in either direction. Whereas -DOPA is moderately effective in the treatment of Parkinson's disease and Dopamine-responsive dystonia by stimulating the production of dopamine in the brain, -DOPA is biologically inactive.