I never had any gyno signs myself I am not prone to gyno so it's pretty new topic for me even tho I've been running gear for quite some time now. Friend of mine has itchy nipple on right pec and very sensitive and painful. Even when he jumps he feels something with his right pec. He's running 500mg Sust and 400mg TrenE/Week. What dose of letro should he run during cycle to avoid gyno problems? Any advice is appreciated. Luckily I never had any of these problems myself so I'm not experienced at all with gyno or letro so I can only advise him so much. Thanks