I began to run Nolva midway through a Test c/Deca cycle (due to gyno paranoia and 15% BF) and had some pretty bad erection problems. Dropped it immediately and started Proviron 100 mg a day. Problem solved, but a couple of days later had some itching nipples. I think it was a bit of a rebound from the Nolva. From my limited experience I would NOT do the Nolva unless you started to exhibit gyno symptoms. Proviron/Test is great IMHO!!