How have the meds effected you?

I accidentally medicated myself ADHD by taking ephedrine and caffeine stack for weight loss (not recommending it). A lot of things that I’ve had trouble with in the past all the sudden got better, such as reading, writing, emotional outbursts, hyper fixation, and compulsive internet use just to name some. I’m going to see a psychiatrist soon because I’ve been trying to get better with these problems for a long time and I could never really do it. But my question is how do the meds affect fixations? I really enjoy being able to fixate on a specific thing and become really great at it. I did it with strength training and right now I’m doing it with fat loss and it brings a lot of social validation for me, so I don’t want to give up my power of fixating.