A friend is a schizophrenic. He was said to have been prescribed for 40 x 20mg Ritalin per day and up to 60 x 20mg at one point by this doctor. He did have difficulty getting his scripts filled as pharmacists would freak out and wanted to call the authority. His massive dose of Ritalins made it possible for him to work as a top programmer at this one of the biggest bank in the world and made 100K + for some 10 years... until the said doctor lost his license and then soon disappeared and died from cancer. Apparently he was giving out similar massive doses to his other patients as well.
Well, that really screwed my buddy up because what little "normal" doctors after that prescribed didn't even compare to what he was used to getting for the past 10 years. He's totally lost touch with reality since then, lost his family, house, disability and insurance from his former employer because his wife called 911 once and he ended up in jail for domestic violence, which did not happen; his wife didn't speak hardly any English and somehow if became domestic violence case. He served 9 months in a mental hospital.
Anyhow, I never saw his 40 to 60 x 20mg per day Ritalin script myself (or should I say i never paid attention back then) and now that I take ritalin/adderall myself, I'm just wondering whether such high dose Ritalin sript even possible? All the people who were around say that it is absolutely true. He was getting Haloperidol shots at the time.