Ive gone as high as a gram but as above my rbc gets too high, I did learn for me the sweet spot was more the length of time not as much as the mgs pw. 600mgs pw for 20 weeks was 10x better than 1g for 10weeks. My buddy has been on 200mgs for 40weeks and test at 300mgs pw I know 40 weeks is long but with those doses and his diet he looks amazing. Its made him like stone with veins like cords that he didnt show b4. Imo the longer its run the better. Like some of the older guys due to using it so much in the past I have to donate blood to keep my rbc in check.