This delicious, effervescent, orange-flavored powder easily provides targeted dosing of vitamin C and bioflavonoids. Potassium bicarbonate is included in this formula as a buffering agent and to give it fizz. Also included are quercetin, hesperidin and rutin, which are all natural bioflavonoids found in citrus fruits.<br><br>DESIGNS FOR HEALTH: Since 1989, Designs for Health has been the health care professional's trusted source for research-backed nutritional products of superior quality. It means superior quality products and proven efficacy which means optimal results for you and your health. Led by a talented and committed team of professionals whose ultimate goal is to help people lead healthier lives, Designs for Health delivers on its promise to provide the highest quality nutritional products available.