Tolcapone

List of products in the National Drug Code with proprietary name tolcapone. This medication is used with other medications (levodopa/carbidopa) to treat Parkinson's disease. Tolcapone belongs to a class of drugs known as COMT inhibitors. Many people taking levodopa for Parkinson's have problems with the effects of the levodopa wearing off between scheduled doses, causing symptoms to return or worsen. Tolcapone blocks a certain natural substance (COMT enzyme) that breaks down levodopa in the body. This effect allows the levodopa to last longer in the system so that it doesn't wear off before the next dose.