The best way to use CBD oil is to let a few drops work under your tongue and swallow after 60 seconds.
There are many blood vessels under the tongue, so CBD is absorbed into your system faster there. Usually you start with 2-4 drops, 1-3 times a day. Build up slowly, depending on your reaction.
CBD from brands like Cibdol comes in dropper bottles, often in concentrations of 2,5% to 10%. Beginners can start with 2,5% or 5%. Shake well, drip, wait 60 seconds, then swallow. Preferably use on an empty stomach or at least an hour after eating for better absorption. Stick to a fixed time (such as in the morning or before bed) to build a routine.
Be careful when combining with medication, alcohol or drugs. CBD affects your liver enzymes, which can affect other substances in your system.
Check your local laws regarding the use and sale of CBD products.