I've been using this combo at 200 units five out of every seven days for about 8 months. Whatever results I may be experiencing are so subtle as to be indiscernible but I was in top shape with dialed in hormone levels when I began. I am considering taking a break from it so see if I can sense a difference but was just curious if my own GH levels will take a hit or require some time to return to normal. Anyone have any insight into this?