When ordering our full-spectrum CBD oil tincture, it is essential to know how to dose. We have 6 different sizes from 50mg, 100mg, 250mg, 550mg, 1000mg, 1500mg. The size of the bottle is 30ml, and the eyedropper is 1/ml. To find out how much CBD oil is in a full eyedropper take 30 divided by the mg of CBD. Example 1000mg oil tincture 30/1000mg equals 33.33mg of CBD in a full eyedropper approx.