I love ALCAR for that. Stuff's cheap and helps with focus and mental acuity. I've been taking it for about a month and I can definitely testify to those effects. As a bonus, it's gonna upregulate your androgen receptors, which could possibly help on cycle. I can't speak to HCGenerate or provide any further specific recommendations, I'm not as well read on those types of things. I'm trying to get there, though! I need a test base for my upcoming Epistane cutting cycle.