As one of the top 10 cannabinoids present in plants from the Cannabis (/ˈkænəbɪs/) is a genus of flowering plants in the family Cannabaceae. The number of species within the gen... More family, CBG is the chemical parent of both CBD and THC, or Tetrahydrocaannabinol, is the chemical responsible for most of the marijuana’s psychoactive effects. It behave... More (see CBGA). CBG is a powerful vasodilator which causes widening of your blood vessels, lowering blood pressure. CBG is also thought to be effective in treating glaucoma because it reduces intraocular pressure. CBG can contribute to the beneficial effects of CBD when present in a broad spectrum or full spectrum extract (see entourage effect).