I just got to try this for the first time today. 50mg, oral.
Holy shit. I think I may have found my favorite functional stim. I need stimulants so that I don't fail out of school, work and life...15 credits in college and ~25 hour work weeks on top of that will do that to you. Sometimes caffeine just doesn't cut it. I only take stims 1-3x weekly as needed to avoid dependency. I was prescribed adderall that I took every day from ages 15-20, and after escaping its clutches decided that I never want to be dependent on a stim again. I turn 23 in a month FWIW.
Even though I really feel like I need to take stimulants sometimes for productivity, I hate them and the double edged sword that they are. I can't stand the shaking, sweating, anxiety, irritability, appetite suppression, sleep deprivation, the inevitable comedown that leads to lethargy and depression, etc etc. IMO Dexedrine (pure d-amp) has the best risk-reward ratio of the commonly prescribed stims, but even dexedrine can consistently produce these negative side effects.
But this stuff. WOW. Color me impressed. This is everything I'm looking for in a stim. Plenty of energy, focus and mental clarity without any of the side effects listed above. I mean I'm sure that if abused you could run into typical stim abuse problems, but for occasional use...this stuff is perfect.
My buddy described this stuff as "it's like your brain is standing at attention, comfortably." That's the best description I've heard to date.
I can see this being very addictive for some, so if you have the tendency to abuse stims then definitely proceed with caution. I set pretty strict rules for myself with regards to stims, no more than 3 times per week (ok this week I took stims 4 times but between midterms and work, something's gotta give.) If somebody is going to take a stimulant for productivity, I would recommend this stuff over adderall or dexedrine or any of the commonly prescribed stims. As far as recreation goes, this wouldn't be my first choice (something like 4fa would be better suited as a party drug due to the roll-like effects) but other than cocaine and 4fa a few times, I almost never use stimulants recreationally. Only when I need to get lots of shit done.
I think my 3fpm induced ramble has gone on long enough, so let me just summarize by saying that this stuff is the bees titties and even though I would recommend it to anyone in a heartbeat, I think it would be best if people keep their mouth shut about it so it doesn't get banned....I've seen that happen way too many times with some really wonderful rc's (2cb, mxe, 6apb, etizolam et al.) But yeah, great drug. Such focus, much clarity, wow
Haha, I typed this all on a phone...perhaps I'm a bit more stimmed than I thought

I would say 50mg 3fpm is equipotent to, say, 20mg adderall in terms of strength.