modafinil with ritalin modafinil ritalin adderall modafinil ritalin interaction modafinil mixed with ritalin is modafinil similar to ritalin taking modafinil with ritalin can you take modafinil with ritalin combining modafinil with ritalin modafinil ritalin difference modafinil with ritalin is modafinil better than ritalin