What's your regimen and how do you measure the effectiveness in an objective manner?
I tried microdosing LSD for a few weeks and even at the smallest dose 10µg I felt like every dosing day was a lost day productivity-wise as I became even more unfocused than usual.
I drop a stamp into 10ml of vodka and take 1ml every 3rd day. I don't have an objective way of measuring an effectiveness of it, of course. However, I do feel that when I need to focus I can focus much easier. I don't feel jitters and the next day I also feel elevated mood and overall just more positive.