I have run 1 test cyp,aka dhb.The pip is no joke, I pinn outer quads and glutes. If you run it you SHOULD mix it with other oils,test,tren etc.Taking more than 1cc will debilitate you for a while.My very first pin was 1cc mixed with 2cc test cypionate,even then it hurt.Walked gingerly from the quad injections,but the results were good and solid.Gained clean solid 15 lbs on 16 week cycle and kept most of it.It is a good compound,I used purple panda labs,they have it on their US domestic side.FYI,domestic is closed till after Chinese New Year