Results are different for everybody depending upon your body chemistry, how low your testosterone is and your eating habits. Most men will start seeing results in the first 2 or 3 weeks in the form of increased energy, stamina and libido. While some men will start seeing a loss of belly fat in the first 2 or 3 weeks, for others it may take a month or two to really see that fat loss. This is because it can take some time for testosterone to build up in your body to the point where it can start the chemical process that flushes out stubborn abdominal fat.