No, I wasn't on medication at the time, couldn't get a script. I was looking for possible replacements, and a few psychedelics(LSD and 2C-B to name a couple) have psychostimulant properties. The idea was to try a few different regimens:

True microdose alone: no noticable effect on concentration, and some worsening.

Subpsychedelic yet strong enough doses to have stimulant effects: significant effect, but working memory was somewhat impaired. Impulsivity also increased.

Various conventional but obscure RC stimulants: some were highly effective, even more so than D-amp or mph. But it wasn't possible to rule out long term cardiotoxic effects like valvulopathy, so I didn't stick to them for safety reasons.

Then I did some limited trials with said stims + a true microcode, this just made me extremely scatterbrained and I quickly discontinued.

Eventually I decided even if I found something, which I had, I couldn't safely use it long term anyway. I cleaned up my act long enough to get real meds.