I get them from time to time (a family member is prescribed these and I sometimes steal a few) - they sell mostly in eastern europe - ansilan.
10 mg of medazepam is the same 0.5mg xanax - I also did some xanax so I have experience with that.
First time I tried, I snorted 10 mg (they come in capsule form so you just snort the powder) - but that was pretty bad since benzos aren't water solluble so I got high once the stuff dripped down my throat and i swallowed it. Don't snort benzos, it's useless - sublingual is best. I would compare it to 0.5mg xanax yeah, but i felt it's effects the whole day (it's half time is 36-180 hours or something) so... it's better than xanax. Also noticed it didn't come up as fast as xanax (took about 2 hours from swallowing it to feel peak effects - maybe xanax is the same to think better, but I NEVER swallow xanax pills, I always keep them under my tongue (and it usually hits me in about 20-30 mins).
Second time I tried 20 mg medazepam - this was exactly the same as 1 mg xanax but again, lasted the whole day, and I could feel some effects the day after that.
I never did Diazepam so IDK how that's like, but from what I read online Diazepam is more muscle-relaxing & shit while medazepam is more anxiolitic (just like alprazolam).
Last time I did 20 mg medazepam and 0.5 xanax, it was identical to being on 1.5 mg xanax. But again, lasts a lot longer.
Also want to note that I have 0 tollerance to benzos since I don't do them often enough to get any (once a month, tops.)
Time just flies when you're on it.
Unrelated to this: I also did bromazepam (calmepam - *brand name) - that one really fucked me up after 9 mg's (It was the first benzo I ever tried - and a pretty average dose too) and my movement was a bit uncoordinated (I was stumbling over chairs and shit) probably like after about 4-5 beers (I weigh 63 kg's),
I was also curious to see if anyone else had experience with this drug ^_^