I have been on Sermorelin for about 4mths. My Dr., has me doing 200 mcg nightly just before bed. I just had some BW done and actually will be trying out Sermorelin/GHRP-2 mixed to see how my body reacts to it. If this is your first time, I would suggest just Sermorelin and see how your body reacts to it. Good luck, bro...