I heard the same thing in the mid 80's and bought a bottle of it. I used it for different things but, in my opinion, it did no good. I remember using it for strained muscles first. Throughout the years I would try it for this and that. Nothing.
When you dab it on anywhere, you will taste it. It is kind of an oily, greasy feeling liquid. It doesn't cost much. I don't think it can do any harm.
I'm kind of a gossip hound, but watching the media whip the small fires into giant forest fires so that they can cover the result is infuriating.