<unk> , sold under the brand name Comtan among others, is a medication commonly used in combination with other medications for the treatment of Parkinson's disease.<unk>  together with levodopa and carbidopa allows levodopa to have a longer effect in the brain and reduces Parkinson's disease signs and symptoms for a greater length of time than levodopa and carbidopa therapy alone.<unk>  is a selective and reversible inhibitor of the enzyme catechol-O-methyltransferase (COMT). When taken together with levodopa (L-DOPA) and carbidopa,<unk>  stops catechol-O-methyltransferase from breaking down and metabolizing levodopa, resulting in an overall increase of levodopa remaining in the brain and body. Carbidopa/levodopa/entacapone (Stalevo), a medication developed by Orion Pharma and marketed by Novartis, is a single tablet formulation that contains levodopa, carbidopa, and<unk> .
Entacapone
Rivastigmine
Influenzanet
Nabilone
Tasimelteon
Droxidopa
Ixabepilone
Zaleplon