It's drugs that haven't been regulated yet because the overcomplicated bureaucracy in control of that kind of thing hasn't completed its process. Taking anything that hasn't been tested for potential side effects yet is just plain dangerous. It might not affect you negatively now, but who knows what will happen in a few years? There's a reason the only discussion you find about this shit is on boards that are already filled with junkies who have been getting high on other shit forever. I don't think you'll find anyone who wants to take new mystery drugs with unknown consequences, on a board about physical self-improvement.
>enhancing the regrowth of neurons in dark parts of your brain
lol "the dark parts of your brain." Fucking pseudo-science.
>the name slips my mind (why I need them)
The name slips your mind because you exist in 2018 where everyone has Google in their pocket and we can use our voice to summon an AI to find the answer to literally any question at a moment's notice. You have stopped bothering to remember inconsequential data because you can just look it up on the internet next time you need to know. This is your brain working the way it's intended to. It's efficient. Taking drugs to unlock its supposed hidden power or "enhance the regrowth of neurons" is just overclocking your brain and stressing it out. Enjoy your senility at age 50.
If you really want to be better at remembering things, you can train your mind to be less attention-deficit by reading books, revisiting things from school you've forgotten like advanced math, and putting the phone down unless someone else contacts you first. Stop yourself from habitually checking social media every 3 minutes to see if anyone has liked/commented your shitposts. If you're playing a video game, play the game. Don't pause to do something else until you're done playing. If you're watching a movie, watch the movie. Focus on things and you'll remember them better.