* HPLC Tested for Potency and Purity * Burn Fat * Suppress Appetite * Increase Energy * Dietary Supplement PrimaForce Syneburn contains Synephrine HCl and can help burn fat, suppress appetite and increase energy. Synephrine HCl is derived from the Citrus Aurantium Fruit, which is used for a variety of purposes in Traditional Chinese Medicine. Synephrine is a stimulant and helps to provide an energy boost, increase in metabolic rate and the suppression of appetite.