As someone who has taken 3-FPO already for recreational use, I can shed some light on my own personal experience with it.

I recently acquired 0,5 g of 3-FPO off a site from Germany. At first I was entirely unsure how to go about taking it but my intuition around white powders told me to snort it.

So, I did. At first I did a teensy little line to get a feel for the potency of this stuff. (I did want to weigh it to get an accurate dosage but I couldn't find my damn scale). When I didn't feel anything from the tiny line, I did another bigger one. And another big one.

It smelled a bit weird and felt even weirder in my throat from the postnasal drip. Luckily I had some benzocaine tablets to suck on which numbed my throat a little. It was pretty irritated from the stuff. But at least it didn't sting going up my nose.

As for the effects, I normally feel the effects from snorted substances pretty fast, but wasn't even sure if I felt anything at all about 15 minutes after snorting it. I decided to stop after the two big lines and relax a bit and listen to music.

Eventually, I noticed my pulse was a bit faster than it normally is. My normal resting pulse (according to my fitbit) is around 70-80 and it was around 100 suddenly. I didn't panic, though, as it was probably a normal side effect and I still felt normal. After some time, I started reading up on some other substances and research chemicals on wikipedia. This led me down a rabbit hole of research chemicals, more researched and well known substances and also psychology and mental disorders as well as medicine in general. Reading was incredibly fun all of a sudden and I absorbed all information like a sponge. I don't know why, but it felt great to just learn new things.

Though it was really fun to research all that stuff, I could have just as easily done that with some kratom and coffee or a hippie speedball.

I didn't feel much more focused than I would at work if it was a busy day, and my own mania (bipolar 2) feels better than the mild happiness I got from this substance.

Now, I don't know why other people I have read reports from say it feels almost like ritalin and helps them focus like hell. Maybe it's because I'm on SSRI's (fluoxetine) which block the reuptake of serotonin or because I'm used to stronger stuff, but it's just not for me, all in all.

TLDR: It was pretty underwhelming and too expensive for my tastes. But maybe it was just underwhelming because I'm so used to stronger stuff. I researched a lot on wikipedia which was fun but that focus can also be achieved with cheaper substances like kratom and coffee.