I really did like both NA-Semax-Amidate and NA-Selank-Amidate, but haven't got either of them since a certain nootropics vendor renowned for rigorous standards of quality control permanently closed up shop. I just don't trust any peptide vendors around right now. Probably plain old Semax and Selank are still available given that they're manufactured by the Russian pharmaceutical industry, but anything more novel and complex than that I would be very, very wary of. It's supposedly just very very difficult to properly synthesise a lot of these compounds and equally hard or even harder to properly exercise any quality control.
There's zero accountability in the industry, almost no-one is getting these compounds tested and there are about as many labs capable of properly purity testing them as there are capable of properly manufacturing them in the first place - which is to say, very very few, and those that do exist, their services are not cheap. There's just no financial incentive to offer high purity or genuine compounds, and no-one is checking anyway so there are no repercussions for doing the opposite. Basically unless you're paying for a custom synthesis from a well respected company specialising in such complex syntheses, your chances of getting the genuine article, in my estimation, are low.
This apparently unchecked proliferation of shady operators isn't unique to the nootropics industry either, it's been happening with physically performance enhancing peptides targeted at the bodybuilding scene for years, where just as many or even more people routinely inject peptides of unverified and often effectively unverifiable origin and purity.
The Khavinson bioregulator peptides induce permanent changes in the brain and body!
Bioregulatory Peptides are a novel class of medicine that hack our biology on the genetic level.
medium.com
This is also highly suspect. Basically none of Khavinson's research has been replicated outside of his own institute. There seem to be quite a range of peptides out of this institution which allegedly have been used to treat diseases with no other accepted treatment within Western medicine. Indeed, some of them would be almost miracle compounds were their ability to apparently reverse the progression of otherwise incurable genetic diseases to be believed, but even the research itself is highly suspect if you take the time to look through a few of the papers, the methodology and the reaching conclusions. Indeed, basically none of the original research has even been repeated within Russia since it was originally performed!
This is perhaps forgivable by just coming from a less scientifically rigorous time and, perhaps, some bias and optimism on the part of the researchers - but in the modern day these peptides are marketed largely to Westerners at obscenely inflated prices. I've yet to hear even anecdotal reports of anyone who actually had such a condition that was untreatable by Western medicine actually getting positive results from any of these peptides. Far more often it's the case that people without any specific condition are using them as "preventatives", or to treat some other fairly vague malady, for which they might report positive results, but really doesn't add anything to their credibility, or the credibility of Khavinson himself.
Epitalon I will concede is fairly interesting, and I have used it myself, maybe there is some benefit, but this is also the only one that (to my knowledge) there aren't any truly fantastical claims about the conditions it can supposedly treat, only that it might potentially slow ageing, which is itself hard to verify of course but also suggests a vague enough range of benefits and mechanism of action that are not entirely unbelievable.
I've found a decent nootropic stack to be 150mg of armodafinil in the morning and then 300mg alpha gpc/200mg phenylpiracetam at lunchtime- gives me a sort of day long sense of good cheer without being at all intoxicating or with any side effects besides sweating. A bit of anziety towards bedtime though it doesnt effect my sleeping.
This to me would be very overstimulating! Armodafinil I find to generally last all day almost at that dose... although towards the end of the day recently I find myself getting a kind of cognitive fatigue, where I'm still "awake" but no longer with the drive to actually apply this energy in any kind of focused way... I guess that loss of the "drive" factor is very similar to what people report from overuse of amphetamines, etc, I really identify also with the other stuff you say about nootropics. For me also one thing I like about nootropics is that they're drugs that I can do often...