Altough SD, Havoc and all these DS's are primarily Non-Aromatizing...I believe thats not the case by any means when you stack them ontop of HRT/Test
I've ran 2 havoc cycle in the past with great experiences each time.
Now that I'm on HRT w/ HCG, I'm feeling great and I decided to run havoc a third time. 5 days in, I became very anxious, hot/cold flashes, wrestlessness, insomnia, irritability, and general major decline in well-being. I quit cycle.
I'm now back on again, but using Arimidex....its really made a huge difference. The mind racing, insomnia, worrying is gone for the most part.
So, either all of this was in my head and Im getting placebo effect from Arimidex, or putting a steroid (even a non-aromatizing steroid) ontop of HRT will lead to increased Estrogen.
My theory is that taking a strong anabolic is expected to supress you natural production which is why your estrogen drops. The estrogen comes from you own T, so when you own T shuts down, and the steroid is non-aromatizing, your E will overall drop as you depend on the artificial T. Now, if you are on HRT, this will not occur, and instead, the Anabolic will lower your SHBG, free up more of your available T which in turn will raise estrogen.
So, is you take superdrol, I recommend you keep an eye on estrogen. Don't take arimidex until you start noticing symptoms of anxiety, bloating, etc. I didn't have any noticeable bloating or nipple sensativity, but apparently my estrogen was really high, even before beginning my cycle.
Let me know how this works out for you, I have a bunch of m-drol left over and would love to try it again one day. We HRT guys don't have to worry about any PCT!! Hell yea!