<unk> , sold under the brand name Ongentys, is a medication which is administered together with levodopa in people with Parkinson's disease. The most common side effects are dyskinesia (difficulty controlling movement), constipation, increased blood creatine kinase, hypotension/syncope, and decreased weight.<unk> , works to restore the levels of dopamine in the parts of the brain that control movement and coordination. It enhances the effects of levodopa, a copy of the neurotransmitter dopamine that can be taken by mouth.<unk>  blocks an enzyme that is involved in the breakdown of levodopa in the body called catechol-O-methyltransferase (COMT). As a result, levodopa remains active for longer. This helps to improve the symptoms of Parkinson's disease, such as stiffness and slowness of movement. In June 2016, it was authorised for use in the European Union. It was authorised for use in the United States in April 2020.
Opicapone
Epoetin alfa
Epoetin beta
Lactitol
Retinol
Eutropoflavin
Tricresyl phosphate
Photoanethole