Fl-adrafinil is supposed to be as potent as mod after conversion, because it converts to fl-mod which has twice the binding affinity as mod, so even though you don't convert 100%, if you hit 50% or so conversion, it's basically the same. It's waaay better than adrafinil, and still otc legal. I don't use it every day though. I cycle it, ephedrine, l-dopa, and dmae over about week. So I take it maybe every four or five days.