I am 28 years old. I have narcolepsy. My doctor has me on Exelon with stimulants to help my symptoms. Has anyone else heard of this? I have been using it for eight months now at the 9.5 dose. Is this safe for me to be using? I have had good results from it. Although it has seemed to be less effective after awhile. Please share any insight into this prescription for sleep disorders or thoughts in general . Thank you,