PRL and restless legs syndrome: For example, levodopa can be used for the treatment of restless legs syndrome and gait apraxia, anticholinergics are used for the treatment of extrapyramidal side effects of antidopaminergic agents, dopamine agonists are used for the treatment of restless legs syndrome and to reduce prolactin secretion, and amantadine has also been used as an antiviral drug.