Every time I've run trest I ran it with formestane. I'm thinking that was a mistake now though. People go nuts trying to shut estrogen down on cycle. You need some estrogen and some people aren't as sensitive to estrogen sides on cycle. You're actually better off without running an AI on cycle, sure you can have one just in case, but destroying estrogen out of fear of gyno is ridiculous. Anyway, you aren't going to develop gyno overnight, it's gonna take some time to grow. You will get some early symptoms of high estrogen first like itching nips. What I think is actually best to do is if you are really worried about gyno, run a SERM on cycle. That way you have some circulating estrogen on your cycle, which is a good thing!. Plus you won't get gyno because of the way the SERM works. Save your anti-e for PCT. For an on cycle SERM I'd suggest torem. Supposedly it's less toxic to the liver than other SERMS, plus it's actually good for your lipids. Lowering estrogen too much also raises your bad cholesterol and lowers the good. This is in addition to the damage to the lipids that the steroid you are running is actually doing.
I believe I'm correct on this but I'd like to consult StanleyG