synephrine is the main "active" compound found in the fruit of a plant called citrus aurantium. the fruit is also known as zhi shi (in traditional chinese medicine), and as green orange, sour orange and bitter orange in other parts of the world. synephrine is chemically very similar to the ephedrine and pseudo-ephedrine found in many otc cold/allergy medications and in a number of weight loss and energy supplements which contain ma huang. we have a gmp certified extract factory to produce all kinds of herbal extract. we possess a complete set of advance equipment for extraction,refinement,column chromatoraphy,condensation and desiccation. our quality control laboratory is well equipped with most advanced instruments,such as hplc,uv,gc,aa etc. action: 1) as a dietary supplement designed to support calorie burning (thermogenesis) and resulting weight loss. 2) it also helps to clean the blood and has been reported to dissolve kidney stones. 3) synephrine is a stimulant, similar to caffeine and ephedrine, it is thought to have similar effects in terms of providing an energy boost, suppressing appetite and increasing metabolic rate and caloric expenditure. in traditional chinese medicine (tcm), zhi shi is used to help stimulate the qi (energy force). although synephrine and several other compounds found in zhi shi are structurally similar to ephedrine and are known to act as stimulants (via adrenergic activity), zhi shi does not appear to have the same negative central nervous effects of ma huang (ephedra).