Are you sure its Yohimbine at GNC?
I've never seen a GNC in the USA carry pure Yohimbine HCL, just Yohimbe extracts (which are dangerous, not to mention shit).
Yohimbine will burn fat.
Yohimbine is a stimulant, so you'll have some energy from it.
I've noticed that Yohimburn does lead to more erections/hornyness/etc. as have many many others.
That looks like it'll do all you want it to do and more except for the depression, which is all in your head anyway. Too many people are on real anti-depressants when all they need is a better outlook, goals, or more organization in their life. Dont sweat the little shiz bro.