I keep hearing diffrent things on this. I am getting confused now!! As most on here know I dont know much about OTC stuff just prescription AAS and tren .. Do you have to use an AI while use Mega -trn ?? I keep hearing it is like tren so I am assuming you will need an AI like letro to stop any kind of tren related gyno. I wanted to know if people on here do include a AI while using M-TRN?? Posted this before but didnt really get a soild anwser as some say m-trn does cause gyno some say no it does not.. Whats the correct input on this !!! Is an AI a must ???