I have not used cycle support, so I can't credit nor discredit it. I have used Reversitol for my cycle of Omnevol, worked great for me. But, from a lot of the post or threads in here, you will probably see the majority leaning towards Nolvadex as SERM. Bottom line, do some research, and make sure you execute a good plan for your PCT. I don't know all the science of what you are cycling with, but it can never hurt to have a SERM. As it is said, better to have and use it, than to wish you had.