I ran it for a couple weeks standalone in the summer and pulsed the rest of the bottle on workout days during another cycle. It has a really great hardening effect, good strength gains, and very little in the way of body mass (I think it was a 2 lbs. gain in the summer). The most pronounced effect that I got from it was that the stuff was like viagra. I wouldn't even be thinking about sex and get a rock hard boner several times a day. I never went higher than 2 pills (6mg, or 60mg depending on what bottle you have) per day. It also shriveled my balls to the size of raisinz.