Long time ago I read something about the difference between oral and dermal methods and their respective efficacy and detrimental effects. I'm talking about the liver where oral was shown to be detrimental while dermal was shown to be comparatively safe. So, if anybody has any info on that I'd appreciate it. Studies and whatnots will do just fine. Obviously it's not for me, it's for a relative.

Also, this relative told me about some old injuries that started to hurt again (two bone fractures), in a similar way when the injury was healing way back when. So, some more info on that would be appreciated too, if you got any of that as well.

Thanks in advance.