I'm not exacly sure how it workd when combined with test, I can tell you that last Nov. I started a test / eq / dbol cycle, I started at 194 lbs, gained 10 lbs the first 4 weeks, which I kindof thought might be a lot of water from the dbol, but I was running letro at 2.5 mg/day, then carried on with the test/eq (750mg/600mg) ew, and kept all of it, now I'm up to 215 solid lbs. , so that theory makes sense, I"m just not sure of the science behind it