Genetic risk studies regarding Ritalin...Docs welcome.

Well folks a good friend of mine is having some difficulties finding studies or any information at all on the effects of Ritalin use on reproduction. Specifically she is wondering if her spouse who has taken Ritalin for many years because he has narcalepsy, will transmit anything from the drug to their first child, who has yet to be conceived. She is worried about possible developement risks (Genetically) for the child.

I told her I’d do some research but I am coming up a little short. Any of the teeming millions have any info by chance?