Just a brief update after more Et1z solution testing...
Sidenote: I know I am not the typical, more intensive researcher on here as I only do low dose experiments to help offset health challenges like lifelong insomnia, but hopefully my feedback proves helpful to some!
When I use to get pressed from buyet1z0lam site (always top quality in my experience), I could take .25mg plus 25mg s3roqu3l and it was perfect combo for 7-8hrs solid deep sleep, although definitely reduced REM, with just a bit grogginess for first hour after waking. I did this routine every night for 5 years with no major tolerance buildup and no serious withdrawal issues when I had to stop due to et1z ban. Slow, slow taper is the key!
Unfortunately, .25mg measurement (using oral syring3) of Et1z solution is definitely not having same effect.
It knocks me out fairly quickly (much faster than 25mg s3roqu3l alone, which sometimes doesn't work at all, so something is working!), but each time I have used the solution, I wake up 3hrs later with what feels like an adrenaline or cortisol spike, and I am unable to fall back asleep.
Thus my current assessment is the solution is either underdosed based on 4mg/ml claim and/or not actually et1z. Et1z is fast-acting and has a short half-life, so if underdosed, this would likely explain the sudden awakening after 3-4hrs.
This is all fine if a dosing adjustment will help me achieve my restorative sleep goal, so trying higher dose tonight, prob around .50, and will report back!