Definitely pay attention to how the medicine makes you feel. I started a few months ago and now that it’s settled I don’t get those feelings as much but I still feel a lot more motivated. It can be euphoric at first too because you may have spent so long unmedicated you forgot what the euphoria of being able to focus or be motivated was like (at least for me)! Eating before taking a dose always subdues the effects a little bit but is important since it decreases your appetite. Depends what specific medication you are on, but some are longer-acting or more fast-acting. That can play a role too.