In the life span carcinogenicity analyze performed in B6C3F1 mice, methylphenidate brought about a rise in hepatocellular adenomas, and in males only, an increase in hepatoblastomas in a day-to-day dose of around 60 mg/kg/working day. This dose is about 2 situations the MRHD of sixty mg/day given to small children on mg/m² foundation.RITALIN may w