PM means personal message. You need to do more research. You need more than 1 SERM for PCT. If you don't know what an AI is you need to use the search function on this site. I would expect Gixxer or Marcus or someone to jump in here any moment.... For now research PCT in the PCT section of this site and also research AI (Aromatase Inhibitor). You'll get this figured out if it's important enough to you, don't worry... International travel for a testosterone shot is definitely not the answer.