An effective dosage can range from as little as a few milligrams of CBD-enriched cannabis oil, to a gram or more. Listen to your body. If you need more, gradually increase your dosage. An average starting amount for adults is 20-30mg per day, taken under the tongue, and let it absorb for 15-45 seconds. The goal is to introduce the oil into your blood stream as quickly as possible, and this can effectively be done through the two large veins under your tongue. We also suggest taking as a regiment. Use the same dose and ratio for several days, observe the effects, and adjust the ratio or amount if necessary. If you are adding it to food or beverages it may take a little longer for effectiveness, because the oil must then be absorbed through your stomach lining.