Meratrim™ (from InterHealth Nutraceuticals), a proprietary plant extract blend of Sphaeranthus indicus and Garcinia mangostana, two herbs traditionally used in Southeast Asia, has been shown in two studies to reduce body weight, body mass index (BMI) and waist circumference within two weeks.
1. Bagchi, D et al. "Efficacy and Tolerability of Merastin - a Novel Herbal Formulation for Weight Management: A Randomized Double Blind Placebo Controlled Clinical Study." The FASEB Journal. 2011;25:601.9