Ok, tomorrow I'm getting all 4. I have a protocol for NAD. Dr. Seed's book says to take 100mcg subQ daily of Selank and 100mcg subQ daily of semax. He says the semax and selank can be alternated. I was thinking of just taking both at the same time. But for how long? Do I cycle? Do I titrate up? The book does not say. Also bought The Peptides Bible and it doesn't say either. And Dr. Seed's book says 215mg cerebrolysin every day for a 4 week cycle. But doesn't say how long to be off before going back on. And do I titrate up? The other book isn't clear for me either. Any suggestions on how I should take this stack?