I just learned about them. Ordered noopept, phenibut, and alpha gpc. Took the noopept and alpha not long ago, and definitely feel a difference in mental clarity. I have a few things going on in my life now that would normally cause stress/anxiety. Do not fell it at all now... and I did before I took them. I know to be careful with the phenibut, but I am looking forward to trying it in small dosses a couple times a week. What are your experiences? Pro's, con's, recommendations, etc.
