None of those energy products work for me. I have tried most all of them to no avail. I am tired all the time.
When I was pregnant, 18 yrs ago, I had to have B-12 injections so I am fully aware that something is going on in my body for me to feel tired all the time.
I do take B-12 daily now and I use the little pill that you dissolve under your tongue. That is the ONLY thing that has made me perk up when I am at my worst.
Of course, I do make sure I have regular blood work done because my body has issues with absorption of important vitamins. I have WAY too much iron in my body yet I am anemic... weird huh! THe B-12 helps offset that.
Good luck.