i haven't tried it so no clue, but i would guess no unless the CBD was from a legit clinic you are wasting your $$$. no way the CBD sold online is anything more than a placebo
It can but I'm not if it 100% will.
If I'm not mistaken most of the research is based on animal studies so I guess it's not completely anecdotal evidence of its benefits.
Would I recommend to use it to treat symptoms like those, No.