Testosterone Boosters

I have been reading a few articles online about supplements, and I am very interested in testosterone boosters. I work out an average of 4 days a week, and back in the summer of 2011 I was making very good progress until I had a few medical set backs.

Now that I am back in the gym, I am not seeing any results as I did before, and I was wondering if adding a testosterone booster might help?