I've been taking a blend of tren ace, test prop and mast prop on short duration cycles for a few months now. AI is important, though I am still taking stuff for anti-prolactin (SAMe 1200mg/day, P-5-P 400mg/day, and Vit. E 400mg/day). I had some sides the first short cycle I did, which I thought were prolactin related - trouble keeping an erection, trouble finishing, lowered libido, etc. Turns out they were E2 related, and after I started taking adex (I thought the mast would do the job - it wasn't) things got much better. Still taking the anti-prolactin protocol more out of paranoia than anything. Might try skipping them next cycle, just to see. Can always start them up if an issue arises.