View larger View larger NatureWise Green Coffee Bean Extract 800 with GCA NatureWise Green Coffee Bean Extract 800 with GCA, standardized to 50% chlorogenic acids, provides safe and effective weight loss for all body types. Because it is decaffeinated, it won"t make you jittery, nervous, or raise your heart rate like roasted coffee. Scientifically Proven Results In 2012, the U.S. National Library of Medicine published a randomized, double blind, placebo-controlled study that evaluated the impact and safety of green coffee bean extract as a weight loss supplement. Over 12 weeks, participants lost an average of 17 pounds by taking GCA Green Coffee Bean Extract twice per day, making no other changes to their diet or exercise. On average, they lost 10% of their body weight and 16% of their total body fat. Moreover, they experienced no side effects of any kind. How Does It Work? This product"s weight loss effects are not caused by caffeine. Green Coffee Bean Extract only has approximately 20 mg of caffeine per serving, similar to a cup of decaffeinated coffee. The key ingredient for weight loss is called chlorogenic acid. Chlorogenic acids works by inhibiting the release of glucose into the body, while at the same time boosting your metabolism and burning fat in the liver. These two mechanisms work together to inhibit the absorption of fat and eliminate weight gain. Quality Guaranteed: GMP Certified Products NatureWise"s commitment to the highest standards of product quality and efficacy are evident throughout our product development process. We source our ingredients from specific regions known for their quality and purity, carefully selecting all natural sources whenever possible. As a continued measure of quality, all ingredient suppliers are required to provide a Certificate of Analysis for each raw material they supply, and each ingredient is verified for purity through in-house or independent laboratory testing.