There are antioxidants in fenugreek but the amount is nothing to write home about. The health benefits it's being researched for include boosting testosterone levels, better lactation during pregnancy, and digestive relief. While not yet proven, the findings suggest that its low antioxidant content may not matter relative to what else it might offer!
Its consumption as food dates back to the 4,000 BC, based on archeological findings in Iraq. Today it is India who is the largest producer of the plant.
Research Support, Non-U.S. Gov't: Carlsen MH, Halvorsen BL, Holte K, et al. Nutrition Journal NIH 2010