Semax - Personally I did not get much of anything with regular Semax; any effects that I did feel were likely due to the dopamine rush from using a novel pharmaceutical. Slight dex potentiation, but again, could just be placebo. I get about the same mood lift from candy, and candy is much more affordable for me.
NA Semax - CLEAR focus - Go directly to brain, don't pass go, don't collect $200; I was really glad that I went forward in my research of Semax and had decided to get this. It's amazing. It's tangible how this permeates the blood brain barrier. Mood lift, slight stimulation on its own, and potentiates the crap out of my Rx stims (for the better, i.e. positive effects are increased while negative effects remain the same if not slightly improved with the inclusion of NA-Semax).
However it seemed like it didn't last as long as...
....Dun dun dun....
... NA Semax Amidate - WOOOOOOW strong focus. Best out of all of them. Comparable to NA-Semax in stimulation, but with an added badass mood lift that neither of its counterparts provide. Plus it lasts way longer, likely due to it being less prone to enzymatic degradation.
And, dare I say, it became mildly anxiolytic after using it daily for a month. I'm in love with the amidated version, and forever will be thanking MYASD/Ceretropic for it. I feel like I'm really harnessing the benefits of Semax with this specific version/preparation.
I'm very, very happy that NA Semax Amidate is a part of my life now. I'm even happier with Ceretropic's kickass customer service: for instance, I just received NA-Semax instead of the NA-Semax Amidate that I ordered, so I emailed them about this, of course, and they responded within mere hours, telling me that a) they're going to overnight the Amidated version of Semax, b) to keep the mistakenly-shipped NA-Semax, and c) they're going to credit my account for the NA-Semax Amidate IN FULL ($77.99).
It should be noted that they were probably extra generous in my scenario because it was my second time receiving an incorrect shipment within 2 months. All they want me to do in return is simply send them a picture of the packing slip so they have the signatures needed to identify the problem-employees, to reduce any likelihood of this happening again, and to be more efficient in overall shipping procedures in the future.
They also have kickass nasal spray bottles. Very even sprays (once it's primed), and well-measured. Not to mention, they are thoughtful enough to deliver it with ice packs, and some other vendors seem to overlook this necessity.