I've used oil sublingual. I found the strain I got really stimulating and was unable to take it. Some can do that I'm told.
I did use the same oil when I had major shoulder pain and inflammation and it helped immensely.
I think cbd is dose dependent and strain dependent. Most I've seem are sublingual Although I've seen caps that have something else in them that is supposed to help the cbd work. Can't remember what it was.
This like everything else is individual. My response may be nothing like yours.