Each capsule of Nature's Diet Caps TM delivers 250 mg of (-)hydroxycitric acid from 500 mg of a high-quality, standardized Garcinia cambogia extract. This natural extract comes from a tropical fruit grown in several Asian rain forest areas. Research shows that (-)hydroxycitric acid helps maintain a healthy balance of hepatic lipogenesis and gluconeogenesis, thus preventing excessive conversion of glucose from dietary carbohydrate into body fat. Further, research indicates that (-)hydroxycitric acid plays an important role in the regulation of normal appetite. Unlike many commonly used diet ingredients, (-)hydroxycitric acid is not a central nervous stimulant. Chromium is also provided at a significant level by Nature's Diet Caps TM. This essential trace mineral potentiates insulin action and thus influences carbohydrate, protein, and fat metabolism. In its biologically active form, sometimes called glucose tolerance factor (GTF) from brewer's yeast, chromium is associated with nicotinic acid (vitamin B-3). Chromium polynicotinate closely resembles the brewer's yeast GTF in both biological activity and chemical composition as it also contains chromium associated with nicotinic acid. Chromium polynicotinate is yeast-free and has documented high bioavailability. The typical dietary chromium intake in the U.S. can vary considerably depending on eating habits. Most self-selected diets contain less than 50 mcg per day, which is below the minimum of the Estimated Safe and Adequate Daily Dietary Intake established by the National Research Council, Food and Nutrition Board.