Empirical data on CBD dosage leads to the conclusion that everyone is different.
We have found the strategy of starting "small" for a few days and seeing if you get the desired results to be a good way to determine your dosage. If you don't feel the desired results, then increase the dosage and try again.
A full dropper holds one milliliter (ml). For adults, we would suggest starting with about 1/4 ml. Our droppers are "graduated" so you can look at the dropper and read the numbers. So 1/4 ml equals 0.25 on the side of the dropper.
In general, smaller people should need less and larger people will need more.
Remember that our CBD is Full Spectrum, which in general, has been shown to be more effective. However, Full Spectrum also means that you are getting everything from the plant. For CBD products the legal limit of THC, specified in the 2018 Hemp Bill, is 0.3% by weight. In our 2400 mg CBD oil, the ratio of CBD to THC is about 40:1.