Selank is a short, synthetic analogue of tuftsin. It has profound anti-anxiety properties. Selank also boosts memory and learning and has been shown to have beneficial effects on pain perception.
There has long been an association between anxiety and learning/memory. The correlation is a negative one, with increased anxiety leading to decreased ability to recall memories or store new information. Traditional anxiety treatments can reduce this effect, as can Selank, but Selank appears to do more than simply reduce the impact of anxiety on cognitive function. There is good reason to believe that Selank actually boosts cognition directly.