milk thistle before during and after (i used pro liver), CoQ10, Red Yeast Rice extract, glucosamine/chondroitin (should be taking this already), for pct i used nolva and dhea along with the above. there is other stuff people recomend too but thats what i used.
if you want the reasons for taking all this crap go read the hundreds of posts about this at anabolicminds forums, especially those by doctor d.