Awesome product! I have done a lot of research on Strike First Nutrition, and found a lot of great info. I am in my late 30's and I have been taking their product Testall Gel consistently for about a year. I have noticed significant improvements in recovery, mood, strength, and even reductions in body fat. After 1 month of taking Testall Gel, I got blood work done and I had a jump in my "T" levels of 200 points! Over the course of the year, my testosterone levels have been slowly climbing, and with NO side effects.