The highest I got was 6iu with grey tops during a cut cycle. I had fantastic results with that. What would be your goal with going up to 10iu? Whats your expectations from it? Going that high of a dose, you'll want to either be taking insulin with it or buying a glucomiter(spl?) and measuring your blood sugar often to see when the insulin resistance starts happening. HGH makes you more insulin resistant the higher you go, so you either become insulin resistant and start putting on bodyfat or take insulin so your body properly utilizes the carbs. Do a lot of research if you go the route of insulin. I can be very dangerous if you screw up dosing or timing.