I suppose you could stack them, but it would be quite a weak "stack". The anabolic effects of proviron (mesterolone) are minimal. It adds some androgen effect, but mainly is of use in increasing free testosterone levels in a cycle because proviron ties up SHBG (sex hormone binding globulin), thus displacing testosterone off of SHBG and making more test. available in the blood to act at muscles, etc. The other use of proviron is anti-aromatase, limiting estrogen build-up, but if you're only taking OT (turinabol), you won't have trouble with estrogen anyways, as it does not aromatize. I hope you have some test. in that cycle.
I would have to call it a stuck or a stick or "the un-stack".
Final word.---weak effort.
But I do like Turanibol,more for hardness than any real muscle gain(though there is some, as well as strength gain)