Representations regarding the efficacy and safety of Purple Stallion™ have not been scientifically substantiated or evaluated by the Food and Drug Administration. Click these links Ref. #1, Ref. #2, Ref. #3, Ref. #4, Ref. #5, Ref. #6, Ref. #7, Ref. #8 to find evidence of a test, analysis, research, or study describing the benefits, performance or efficacy of Eurycoma longifolia Jack, Puncturvine, Turnera diffusa, Piperine, Amino acids, Horny goat weed and Panax ginseng based on the expertise of relevant professionals.