I take in conjunction with my daily test booster for more intense workouts or athletic events. On non-training days, I take my test booster in the morning, and this product in the afternoon with my lunch. At nearly 41 years old, I feel great for my age regarding my energy and endurance levels, and sex-drive. While I can't say that this product is a "magic pill" and is single-handedly responsible for these results, I do know that their ingredients are tried and true for effective test boosting supplements. A