The legal testosterone accelerator Test Stack No.17 was developed by Dr. Field Farrar, a successful research gastroenterologist at a major university hospital. He's definitely not part of the evil supplement industry. He developed Test Stack No.17 to help his own low test levels. Out of 20 different formulas that he studied, the stack of nutraceuticals in the 17th version raised testosterone the most. That's where the name Test Stack No.17 came from.