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NVE Pharmaceuticals developed Stacked 2 roughly 15 years ago for bodybuilders as an effective herbal alternate to the practice of stacking. Stacking was what the bodybuilders routinely engaged in by stacking and ingesting ephedrine hcl, caffeine and aspirin to give them extra energy for work outs as well as acquire a lean cut look approaching competitive shows. Through extensive research and following numerous documented studies, NVE determined that by standardizing herbal extracts, the desired results and look sought by bodybuilders could be accomplished.