I experienced a bunch of side-effects that pretty much all disappeared after the first ten days. I read online that they cleared up for most people, sometimes taking a month. The only side effect I have now is an increased heart rate approximately 15bpm but it’s still considered in the normal range and exercising helps. I feel slightly less able to focus after a couple of months of taking it, but I’m definitely a lot more productive than I was before so it might just be my perception of the effectiveness. Emotional regulation was my biggest ADHD issue and atomoxetine helped a lot in this area and it’s effective all day long so that was a big plus for me.