I picked up a gram of CBD for my Mom, and while I was at it I picked up a half-gram for myself, for use but also to avoid wasting Mom's money of things didn't work as expected.
I took 1/2 gram of CBD isolate and dissolved it into 15ml MCT oil. It took a while, with lots of stirring, but it did all dissolve.
10 drops is ~16.6mg of CBD. I took it sublingualy, It was almost tasteless. I felt the effects in about 30-40 minutes and they lasted at least 5 hours
I mixed up Mom's gram in 30ml oil for the same strength. For ease, I am saying 33.3mg per ml
I took mine a little bit further by dissolving 110mg of THC isolate into the roughly 15ml.
So now 1ml of my tincture contains 33.3mg CBD and 7.3mg THC.
10 drops is a dose of 16.6/3.6 CBD and THC respectively.
That is far too small a dose of THC to be intoxicating, but I found the CBD effects were dramatically! enhanced.
So this morning I took 5 drops. That is only 8.3 and 1.8 but I felt the CBD effects very clearly, along with a very mild lift.
Even a tiny amount of THC made a huge difference in CBD's potency.
I will be growing an IP CBD plant with has less than 6%THC and 13%CBD and also has terpines and other cannabinoids.
It's been fun experimenting, but if I get similar or better results I won't be messing around with expensive isolates any longer.