This was my 4th cycle. I started with M-Drol at 20mg for one week and had bad sides, so I switch directley over to my Phera-Plex cycle in which I was planning on bridging the two. Anyways, after about two weeks I developed a heart arthymia, I know right, just bad timing to cycle I guess. Doc said I would be fine. So I started my PCT: Nolvadex at 20mg, cycle assist. I was wondering, how long should I use the nolvadex, I usually do 4 weeks but thats after a 6 week cycle. I dont feel too shut down either, my boys seem to be almost back. I've been on PCT for 8 days.