Winstrol and endogen testosteron

Hi
Anyone can tell me if winstrol have some effects on the endogen testosteron?Winstrol will supres endogenous testoteron or not?

Every steriod supress endogenous test levels, including anavar despite what some people think.

Proviron is not a steroid?Its not an anabolic ster but it is an androgenic hormon,right?So if proviron is a steroid then not all sters supres the endogenous test,or im wrong?

Here some info on it bro, hope this helps you:
http://www.deca-sustanon.com/proviron.htm

Sicilian 30 i dont need info on proviron,proviron is a hormon right?proviron is a steroid too,proviron dont have anabolic effects but is a androgenic steroid.Steroids are all hormones,estrogen(a female hormon)is a steroid too,corticorenal hormons are steroids too.Boxer101- not all steroids supres the endogenous testosteron,thats why i had doubts about winstrol.