 The lawsuits alleged that the makers of methylphenidate (brand name Ritalin) and the American Psychiatric Association had conspired to invent and promote the disorder ADHD to create a highly profitable market for the drug.The lawsuit also alleged that CHADD (children and adults with attention deficit/hyperactivity disorder) deliberately attempted to increase the supply of Ritalin and ease restrictions on the supply of Ritalin to help increase profits for Novartis.Beginning in the 1980s, a series of lawsuits were filed based on the perceived harmful side effects of Ritalin.