ONGENTYS (opicapone) is a prescription medication used as an adjunctive treatment to levodopa/carbidopa in adults with Parkinson's disease experiencing "off" episodes. It belongs to a class of drugs known as COMT (Catechol-O-Methyltransferase) inhibitors, which work by blocking the COMT enzyme that breaks down dopamine, thereby increasing the levels of dopamine in the brain and helping to improve the symptoms of Parkinson's disease. ONGENTYS is specifically designed for use in patients whose symptoms are not adequately controlled with levodopa/carbidopa alone. It is administered orally in the form of capsules. As with any medication, it is important to use ONGENTYS under the guidance of a healthcare provider, as it may have side effects and interact with other medications.