I was on Nolva, consistently, for almost three years.
When I started, my TT fluctuated between 159-350. I could hardly function. Within a few months of getting on Nolva at 40mg a day, my TT climbed to 900. I also had to get on adex, .25mg, twice a week. This kept my TT around 800-900 and E2 20-30 (3-70).
So lets say that was a year. Over that year, things obviously got better. I could live again. Not perfect, but better.
Over the next two years, three things happened. 1) Lowered Nolva dose to 20mg, then 10mg, then 5mg. 2) Had to raise adex dose to keep E2 at bay. 3) SHGB climbed from 20 to 44 (7-49).
I never felt 100%. I had great days, but my overall feel was just never like it was before hormone issues. The only true side effect I had was zero libido - for three years. BUT - likely from the high SHBG, things kind of leveled off and stayed decent but not great. When I tried to get off, everything crashed pretty bad. Further, even while on Nolvadex, I would have some crashes. The issue with a hormone flux, while taking adex, is your E2 gets dumped. What felt like overnight, my TT might drop from 900 to 500. Thats fine, unless you are taking 1.25mg of adex a week... which for a TT of 500, crashed my estrogen. Then TT would climb back up to 900 and all would balance again. Btw, Nolva is known to reduce the effectiveness of adex, hence the larger doses. On TRT, I don't need any adex for TT levels as high as 1400.
This year, I switched to TRT. I am still working out the kinks, but overall, it wins. I never trusted the long-term Nolvadex treatment. There were WAY too many ups and downs. Further, because of it, I forgot was a libido was for three years.
Excellent for restarts - but I am not so sure about long term treatment... at least for me.