The present disclosure relates to compositions and related methods to reduce body weight, body fat, waist and hip size, plasma total cholesterol, LDL, triglycerides, blood glucose, leptin and C-reactive protein levels and increase in HDL and serotonin levels in an mammal. The LeptiCore® formulation disclosed, at both the low and high dosages, is helpful in the management of fat gain and its related complications. The higher dosage resulted in significantly greater reductions in body weight and triglyceride, blood glucose, and C-reactive protein levels, as well as increased serotonin levels.