pay close attn to what Div says as this stuff is pretty potent, theres no denying the shit works well (as i used it durin my last comp prep)...however the sides for me were almost unbearable...constant trembling and extreme sweating even while just sitting , and the whole time felt like my heart was racing and this was just at 75mcg., keep in mind that i was running 120mcg of clen with it so im sure that was part of it also.