I like running Tren E between 600-800mgs/wk, but after the 7th week I'm ready to throw in the towel. The only side that annoys me is the heavy breathing. I also ran it recently with 1gm of Test. Next time, test will be much lower. After dropping the tren my cycle went to shit and I'm back to cruising on Test Cyp with some Primo. Another lesson learned....run the Tren last, not first.