A US Food and Drug Administration study reveals that a number of the products it tested labeled as ‘bitter orange’ did not meet label claim for synephrine content and more than 10% contained undeclared synthetic ingredients.
A dossier of scientific data that convinced Health Canada and Intertek Cantox of the safety of bitter orange extract, synephrine, has been sent to Finnish authorities which recently banned weight loss products containing the stimulant, along with caffeine.
Leading bitter orange/ p-synephrine supplier Nutratech has countered a report from the German Federal Institute for Risk Assessment (BfR) over concerns about the ingredient’s safety, noting it is at odds with the scientific literature.
Sports supplements and weight loss products that contain a combination of caffeine and synephrine from bitter orange may not comply with current regulations and could be classified as unsafe, warns the BfR.
Extracts from bitter orange (Citrus aurantium) on its own or combined with naringin and hesperidin do not pose any risks at doses commonly used by humans, says new data from a 60 day, double-blinded, placebo-controlled trial.
Nutratech is reassuring the industry that its bitter-orange based
ingredient Advantra Z does not contain meta-synephrine, an isomer
that has the potential to raise blood pressure, following testing
at an independent laboratory.
The debate over the safety of citrus aurantium rumbles on, with the
American Herbal Products Association (AHPA) adding its voice to the
industry backlash against a review article published last week
which suggested that the use of...