The isolation of CBD was recorded back on 1940 by two independent investigation groups. The group of Adams and colleges successfully isolated it from marihuana 1. At the same time Jacob and Todd successfully isolated the cannabidiol from indian hemp resin 2. But was not until 1963 that Mechoulam and Shyo discovered the chemical structure of the CBD and enlightening the comprehension of the nature of the cannabinoids 3. At the next year 1964 Gaoni and Mechoulam finally elucidated the chemical structure of the main psychoactive compound of cannabis the THC matching the starting point of the modern pharmacology of cannabis 4.