Product Description How does one use 6-OXO? If you are using it to combat estrogen during a cycle of aromatizable steroids then you can take it every day of your cycle, once a day (preferably with your evening meal) at a dosage of 200-600 mg. If you are using it to jump-start your testosterone production after a cycle of prohormones (or just to increase your own tural production in a clean state) then you would also take 200-600mg of 6-OXOÂ? once a day, for a period of 3-6 weeks.