Comment by sudosteph

Atomoxetine's effect size is surprisingly similar to methylphenidate, though in my experience it treats different aspects of ADHD than stimulants. Some doctors (mine) are open to combining it with a long-acting stimulant, which actually can be a really nice setup, especially if you're sensitive to stimulants.

Hope you get it worked out OP. I will say, if it's ADHD, it's 100% worth trying to get the best treatment you can.