most likely if his buddy made it from powder im gonna take a guess and say its Tren A. now the test is a different story. could be prop from a Syno coversion or he could of gotten any other test powder.
so have him stop the tren. like now. and FIND OUT which test it is. cuz that will make a difference in when he can start the PCT (clomid, nolva)
he will need to taper the letro down and then before stopping the letro completely.. have him start with nolva.
so have him run 40mg of the novla for about 5 days WHILE STILL runnin the letro at about .5mg a day.
then after a week of that. he can stop the letro all the way
if he stops the letro completely now... it will cause his estrogen to rebound and then he will be in even worse shape
if he cant get it up then its because he has too much prolactin which is a side of the Tren.
and how you combat prolactin is with Caber... here read this thread
http://forums.steroid.com/showthread...t=caber+thread
it will give you an idea of what caber is and why he probably needs it
if you need a place to get the caber... ill send you a link