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Hi Shanni
I am on Vyvanse and have been for several years (my med history stretches back 10+ years) and boy could I tell a difference between Adderall and the Vyvanse: the Adderall didn’t last nearly as long for one. In regards to the spaced out feeling, I would say the prednisone is more likely the cause. I have experienced spacyness after a psych med change not a adhd med change. The irritability on the other hand I have quite often despite my meds. I am very sensitive to noise–loud noises have had more of an effect in the last couple of years. I find myself avoiding places, such as church, simply due to the loud music.
From what I have been told by my p doc, the difference between Adderall and Vyvanse is the Vyvnase works more like a curve where the Adderall is like a spike. The Vyvnase lasts 8 about hours when the Adderall is said to last around 4 to 6.
Again, I am either speaking from my own experience or quoting what I’ve heard one doctor say.
TessErin