Fat burners, such as Pure Ephedrine HCL, are strong diet pills that actually work on burning fat throughout the day. This process is called thermogenesis, where the supplement works on heating up the body and therefore the body uses energy. The energy being used is taken from fat stores within the body. Ephedrine is them ost powerful thermogenic available and works effectively as an energy booster and fat burner. Pure ephedrine not only burns fat and provides and energy blast, but also suppresses your appetite making it more effective as a weight loss supplement.