Hi, I’m on Vyvanse right now and it’s been the most helpful so far for me. It lasts 12-14 hours and the feeling is pretty consistent, no ups and downs but I can’t take it after 11 am-12 pm or I won’t sleep. It does take about an hour to kick in and I’ve noticed if I don’t eat before/with it, I can’t eat breakfast for a couple hours because it makes me nauseous. However, that aversion is gone after 2-3 hours and I can eat just fine. My appetite is much lower but if I remind myself to eat/have the time, I typically do and can eat normal portions. I haven’t noticed many “personality” changes except I do have some increased anxiety (most stimulants come with that) but I’m managing this with physical exercise, drinking enough water, eating regularly, and I recently started guanfazine, which is another med used to help ADHD in conjunction with stimulants but it manages the anxiety