Let me share my findings... I really felt the effect of the first two or three 40mg doses I took a while back. My mental energy was super high. Motivation and persistence in solving mental challenges at work were clearly above the average. The effects seemed to be fading away so I took a break. I started to take it intermittently again, 20mg sublingually, few times a week (I hesitate to take larger dose, until the results from the ongoing study arrive). I do not experience the same effects I did when taking the first few doses.
However, my cambridgebrainsciences.com results show that something positive is going on in my head. I'm not a regular cambridgebrainsciences.com user, and my baseline results date from more than a year ago. I started to play with it again just last week and the results did improve. Depending on the test, I've moved upward for at least 5% up to 10% in the population standing. In a few planning and memory tests I reached 99% mark.
On the other side, I remain stuck in Dual n-back at level 5, with 50-60% success rate. I plateaued at that level some time before I started taking the substance. I kind of lost motivation to play dual n-back, and don't enjoy playing it as much as before. That might have contributed to plateauing. Don't know.
Subjectively, I'm not sure if I feel "better" in any sense. I've always been a optimistic person, so I guess NSI-189 didn't have a lot of work in my brains, on the mood part at least.
I'll keep taking 20mg sublingually from time to time, until it runs out. Along with NSI-189, I've been taking:vitamin B complex
,EPA + DHA oils
,K vitamin complex
,homemade liposomal vitamin C
That's about it...