Hi,
I did worry it would be difficult to find any information about it the way you did spell it. Please make sure that when you ask about drug names you spell it off the bottle/box. That way it's much easier to help you!
On MH you can now look up many drugs. Hopefully you can find something there?
Risperidone (Risperdal):
http://www.medhelp.org/drugs/show/4370
I hope I don't wind up confusiong you - it's the closest I could find.
Check back!
~Florena