The protocol with active herbal compound included G cambogia extract (50% hydroxycitric acid by chemical analysis), taken 3 times daily as two 500-mg caplets 30 minutes before meal ingestion. Total daily dose was G cambogia extract, 3000 mg, and hydroxycitric acid, 1500 mg. Placebo-treated subjects followed an identical protocol in which active compound was replaced with inert ingredients. Subjects taking active compound or placebo were provided a high-fiber, 5040kJ/d diet plan, with 20%, 50%, and 30% of energy as fat, carbohydrate, and protein, respectively. The recommended daily food provision was divided into 3 meals with an evening snack. Subjects were asked to maintain a stable physical activity level and return for evaluation every 2 weeks for a total treatment interval of 12 weeks. Body weight was measured at each visit, and clinical information, including potential herb or weight loss adverse effects, was obtained. Biweekly pill counts and diaries were used to check patient medication compliance. Diet compliance was not quantitatively monitored during the study.