I'm currently running Tren E at 500mg/Week and the only side I'm expericing is very heavy breathing and shortness of breath in general. My previous cycle I ran Tren ace and I had the shortness of breath, but I would also experience night sweats 3-4 times a week throughout the whole cycle. I'm 5 weeks into my Tren E cycle and havn't got the sweats once. I'm not doubting my Tren, because my Test and EQ are from the same lab and sex drive is through the roof, as with appetite and vasculairty. I also got Tren cough 3-4 times on the ace cycle and never with the E.