Racetams are the first family of nootropics; without them smart drugs might have never been. Racetams are a class of nootropic compounds that share a pyrrolidone nucleus, but in many cases not much else. Fortunately, Racetams go well together and the differences in each work out for the best, creating stacks you cannot get with just any nootropics.
Anxiety is a normal reaction to stress and at times can prove beneficial. Unfortunately, there are people who experience an excess of this response, and no matter how unnecessary they may understand the anxiety to be, there is nothing they can do about it because it is not something that can be controlled logically.