There actually is a true fat-burning weight loss drug that works by boosting basal metabolism! Anyone who knows that basal metabolism regulates things like core temperature is already chuckling.  Yes, "firing up" your metabolism was an itsy bitsy side effect...of cooking you alive when too much is consumed (if its other poisonous effects don't get you).  I bring you DNP: https://www.theguardian.com/science/the-h-word/2014/feb/06/dnp-deadly-weight-loss-drug-science-history http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3550200/ BTW, its dosage isn't even predictable.  You can be A-OK on 200mg one round and nearly die the next on the same amount.  It's Russian roulette!