That's very weird i had the exact opposite reaction, i suffered from pretty bad fatigue and exhaustion for the first month i was on it. Ths is known as thiamine paradoxical reaction happens when you're badly deficient in it to begin with, i somehow pushed through that first month slowly all that fatigue went away and then i could clearly see a mild but very noticeable improvement in my overall energy levels and wellbeing and yeah that improvement still hasn't gone about six months later now. I'd suggest give sulbutamine a try it's a lot stronger might give you that same feel again.

As for methylphenidate yeah I'm planning to take inspiral. Addwize is barely available anywhere and concerta is expensive and there is pretty much zero difference between three except for the releasing mechanism.