How do you tell my doctor i want to switch my Vyvanse to adderall xr?

I have the same question! I am experincing terrible side effects from this drug. The side effects do not outweigh the benefits for me. My job requires me to be very alert and demands immediate decisions. Stratterra has been a nightmare for me so far. Im 28 and I have been on 40 mgs for 10 days. My side effects are getting worse and I feel like this drug is not for me. I feel like I need something else . . . this is all new to me. Any suggestions on how to ask for different treatments?