I can also confirm that dermacrine sustain works. I used HCG - human chorionic gonadotropin - for 10 days at 500IU's ED then I started Dermacrine Sustain. I never crashed and my dick got hard constantly.
I finished my bottle and I've still got a month or so before I start my next cycle so I'm going to try a bottle of regular Dermacrine now and see what thats like.