First, you have to make sure you get legit primo, if you are not spending the money per 10ml's at least over 120$ your probably ending up with EQ. Back to the question, I ran test at 600mg with primo at 600-800 mg weekly and over a period of about 8 months to loose some body fat. I lost about 45 lbs. I tweaked my diet slightly did my cardio. joints felt amazing, blood work was spot on, great euphoric feeling. General good mood all the time. I cant say enough about Primo. at my age 52 its my long term cycle hands down.