ב''ה,
For a final adventure I'm going to say "certainly," but not going to try to specify quantity except that, well, you can kind of keep going after you've quaffed whatever you're going to quaff.
"Tizzling" is, uh, basically the benzo experience but possibly even slightly more to the amnesic side; it's relatively short duration but relatively potent and I probably made many of my worst life choices while dabbling.
Honestly if I was going to have an opinion, "as much as won't make you pass out before you finish if you want to drink that," as is very personal and subjective. You'll have to know yourself, but possibly "as much as won't make you call an ambulance while you're in the haze" if your sober intention is to not do that.
I can't exactly advocate for experimentation to know what amount reliably knocks you out within, say, 40 minutes, because, y'know, bad benzo/etizolam decisions, and I have *opinions* on how use of these things can lower mood and bring on the maudlin side of depression even if I'm also not going to argue life is worth living..
That said, shit's like candy. Maybe don't entirely pack your stomach with sweet coated pills to the point of nausea, but, ahem, 'a very modest handful' would probably be quite pleasant compared to not having that, that is, without necessarily filling your palm or stacking them more than one level high on it.
IIRC, onset is within about 5 to 20 minutes and peak probably, certainly hard to be sure, maybe a standard 45 minutes lasting 4 hours let's wild ass guess on? I don't think hepatic metabolism is required so, onset is.. fairly rapid as soon as that stuff dissolves and starts getting into you.
Now, just to be honest, your personal sweet spot between 'finishing task you soberly chose to accomplish' and 'nap at the desk and then passing out on the curb on your way to buy beer' is, uh, a 'know thyself' scenario and also my personal opinion on the etizolam experience.
Y'know how some people have Ambien stories? Hardly noticed Ambien, but my etizolam years (as may have beat active benzo withdrawals, hard to say but got me trying it for availability).. good times, bad times, hazy times, but in retrospect, maybe that was 700 days of "Ambien story," just that I was inexplicably functional enough during that and didn't have too many absolutely awful instincts.
I would imagine the "can't do a hit of acid without waking up naked on the lawn surrounded by cops" types would have yet worse luck with it.
[Just being honest here, if you are CTB with it, these aspects don't much matter, while if you are drowning the miseries of existence with these amounts twice or thrice a day, ahem, know thyself, and while I'm not sure it's really so much more 'amnesic,' perhaps I have the opinion the quality of my decision making on regular benzos was bad enough, but I chalk much of that up to the Xanax equivalent problem of oh G-d it's going to wear off in a half hour better take twice as much benzo withdrawals logic.]
Edit to add: I have no idea what the propanolol adds but, that is probably where you'd have noticeable unpleasant side effects, so research that. Etizolam, like liquor but without the limiting aspects of liquor, is basically just fun and more fun until you pass out at your desk or wake up on the lawn. (If you wake up; in fairness I have not compared my past consumption to the LD50 in years and gave no fucks at the time, but like exact benzos it's one of those 'hard to do yourself in with yet you might choke on your own vomit if doing liquor with it' kind of drugs.)
