Apparently, that stuff is of questionable safety, as it contains DMAA: http://www.fda.gov/ForConsumers/ConsumerUpdates/ucm347270.htm?source=govdelivery http://

Apparently, that stuff is of questionable safety, as it contains DMAA: http://www.fda.gov/ForConsumers/ConsumerUpdates/ucm347270.htm?source=govdelivery http://www.fda.gov/ForConsumers/ConsumerUpdates/ucm347270.ht... https://www.nytimes.com/2013/04/13/business/fda-issues-warning-on-workout-booster.html?_r=0 https://www.nytimes.com/2013/04/13/business/fda-issues-warni...