When these two products were studied head-to-head, the Testim "produced approximately 30% higher serum testosterone levels" in a single-use study. In another study that took place over 90 days, the increase in total testosterone was similar with both drugs when the dose was 50 mg/d. When the dose was raised to 100 mg/d, however, Testim produced a 300% greater increase in total testosterone compared to AndroGel. You can read the whole report here:<br> <a href="http://www.medreviews.com/pdfs/articles/RIU_5suppl1_s34.pdf" target="_blank">http://www.medreviews.com/pdfs/articles/RIU_5suppl1_s34.pdf</a><br>