HPTA funtion

[Derexan]

I don't understand what HPTA funtion means....What does it mean

 

[StoneColdNTO]

This is a pretty good article............

http://www.steroidology.com/forum/showthread.php?s=&threadid=4601&highlight=hpta

 

[JohnnyB]

This is a pretty good article............

http://www.steroidology.com/forum/showthread.php?s=&threadid=4601&highlight=hpta

yes it is

JohnnyB