The ritalin seems to work to relieve the condition .
利他灵似乎有抒解作用。
In britain , for instance , ritalin is a class b drug .
比如，在英国，ritalin是b级药。
Provigil and ritalin really do enhance cognition in healthy people . Provigil , for example , adds the ability to remember an extra digit or so to an individual 's working memory ( most people can hold seven random digits in their memory , but have difficulty with eight ) .
