Extreme OG, popularly known as "Extreme," is a strain with a strong indica predominance. The Extreme OG high's side effects can be debilitating. It slams into you with a flood of tingles that cover your entire body . You may have spells of lethargy that make it difficul for you to achieve anything, despite feeling awake and engaged. Because of how potent the effects are, only heavy smokers should use this strain, especially if you plan to use it medicinally. Excellent for treating migraines, chronic pain, headaches, and sleeplessness.