Definitely going to give the ND a shot..
Just received my 2nd B12 shot about half an hour ago. While I can't say I felt a huge change in energy from the 1st one, I have noticed an interesting effect from both of them. Call me crazy but I notice a sense of euphoria, more specifically an opening up of my peripheral vision and an appeciation for colors/patterns around me. Sounds weird and I havent had a chance to google around about others experiences to see if that is something others have reported, but I distinctly noticed it both times.
Sleep seemed the same after 1st one, we'll see how this weekend goes.