You’ve got a pretty valid point about “why not exercise instead of meds” - the answer to which I do not know, though my guess is meds are more “reliable” of a solution. The side effects, yes, they’re not great but (with the caveat of having a proper doctor) should be very little/manageable. Disclaimer, I am on (prescribed) methylphenidate for my ADHD, and the side effects can be annoying but I’m generally better off with the medical + side effects than otherwise. Exercise does help pretty well for me too, though unfortunately now in 2 degree C weather it’s not convenient.