It's really good. I got my hands on some about a year ago and did a 2 week cycle at 10mg. I put on roughly 15lbs. My strength did not go way up, but did increase. I also followed a good PCT. A must have for M1T. Like fatherenis said, it is very harsh. All you need to run is 2 weeks on and then maybe 2 off then run it another 2 weeks. Look up old M1T logs.