We evaluated the safety and efficacy
of glucomannan, a water-soluble fiber supplement, for achieving weight loss in overweight and moderately obese individuals
consuming self-selected diets. Methods. Participants were randomly assigned to take 1.33 grams of glucomannan or identically
looking placebo capsules with 236.6 mL (8 ounces) of water one hour before breakfast, lunch, and dinner for 8 weeks.