Specifically designed peptides like Cerebrolysin, Dihexa, Selank, and Semax increase the brain-derived nootropic factor and neuro growth factor. These factors impact the metabolism of the brain and subsequently your ability to focus and overall brain health.
Man I'm sorry, it's been too long. Mental alertness, for sure. It was just something I threw out due to cost cutting. This has been at least 5 years. I think 100mcg per day.
I shouldn't have clicked this thread again. Now I'm thinking about that or cerebrolysin. Maybe it's come down in price some.
Ceretropic. No longer in business. This was the 'risky' side of Nootropics Depot, which is still around and an awesome vendor. I've seen more than one sponsor here with semax though.