o Dopamine agonists mimic the action of dopamine in the brain and can be used alone or in combination with levodopa. o Monoamine oxidase type B (MAO-B) inhibitors help prevent the breakdown of dopamine and prolong its effects, thereby reducing motor symptoms. o Catechol-O-methyltransferase (COMT) inhibitors prolong the effects of levodopa by inhibiting its breakdown. o Amantadine can help alleviate dyskinesias (involuntary movements) and may also provide modest benefits for other PD symptoms. o Anticholinergic drugs may be used to manage tremors and dystonia in some cases.