The thing with CBD and/or THC is that they are not a "cure" for the symptoms for which they provide relief. They are like other pain or anxiety relievers; they relieve symptoms temporarily. For me, they do a great job of relief, and I only use them as needed, which isn't everyday.
There is always the possibility that after feeling the lack of anxiety we may be able to recreate the feeling without the assistance of the CBD/THC, but that would probably require learning meditation techniques. In fact, some THC users experience more anxiety, so if that happens to you, use only the CBD.
I think that since Canada has legalized Marijuana for recreational use, researchers will be freed to do more studies on exactly what effects it has on different people. We just need to remember that this is all an experiment at this point in time. For more information about dosing, etc., I have found that https://healer.com is a very helpful site with tons of information.
Thanks I will check that page. But what I've read everywhere is that there's a need of trace amounts of thc (,3%) to receive te complete benefit of the cbd. Are you saying than an isolate could have the same effects on symptomatology?