i think eleuthero is a great herb for adrenal fatigue but i had the same issue with it. I know its a good herb because one brand i took worked great (kare n herb) and another didn't (bluebonnet nutrition). I think the one from bluebonnet is just way too strong. I seriously still was wired over 24 hours later.
I would try taking a half dose or even a third dose and see how you feel.
are you taking an extract or the whole herb? If you are taking an extract, i would recommend starting off with the whole herb so you can get a wider range of benefits as well as adjusting to a higher (extract) dosage.