I took it for a while, 50mg with a meal in the morning. I did notice that my muscles seemed fuller, I did have a bit more energy, and my erections were more effortless--don't believe the username!
Although, it did seem to give me a bit of acne in the face, so I stopped taking it, but this might not affect you--I'm 23
All in all, I did notice a positive difference, but I figured that I didn't really need it at my age so I didn't buy anymore when I ran out.
It was the DHEA from walmart, available in 50mg, I don't remember the brand name.