Personally Phenibut didn't do much of anything for me.
Here's a good post about it though: https://bayesianbodybuilding.com/phe...osage-effects/
I've also tried Noopept, Piracetam, Phenylpiracetam, Oxiracetam, and Aniracetam, all of which were pretty good but I don't use them regularly because they either haven't kept working or were not very beneficial to begin with.
Noopept, Piracetam and Phenylpiracetam were the most effective/favorites.
Noopept was a nice in that it gave you a nice long lasting bump in alertness. The issue was weighing it since you take mg's as well as the tolerance. My advice to buy the pre-weighed stuff just to make sure you're getting consistent doses for consistent effects and maybe if you like it invest in a nice scale to save a bit of money in the long run. Since I work at a Medicinal Marijuana shop I also have a recommendation for buying a scale online. The company is called Way Up Scales
and they hooked us up with some crazy scientific scales that we need to meet new upcoming legal requirements and yea they were super helpful so... shameless plug
Piracetam seemed to best the best as far as effectiveness but it has the opposite problem of Noopept in that you have to take so much and it tastes TERRIBLE lol. Again maybe getting pre-weighed and capsuled version would have been better.
Phenylpiracetam was the best as far as noticeable change. It's prolly the most effective brain power boosting supplement I've tried that doesnt have nasty side effects. Mental clarity, creativity and a bit of a better mood, although that could be cuz I felt like I was enhanced not a direct effect.
Sorry for going off topic a bit but I feel like its all relevant within the Phenibut discussion. Nootropics are interesting for sure.