In terms of the quality of CBD in CBD Guru CBD oil and capsules, there is no difference. Each one contains CBD derived from organic hemp that has been grown in the United States without the use of chemicals, insecticides, or herbicides. The main difference is in the form of consumption. You can hold CBD oil beneath the tongue for up to 90 seconds and swallow, or add it to your food or a drink. CBD capsules are more convenient for some users because you can swallow them with water. While CBD oil is consumed sublingually, CBD capsules are taken orally.