Guggulipids or Gum Guggul Extract has been a staple in weight loss formulas aimed at providing healthy metabolism, cholesterol and thyroid support. Two specs are available: 2.5% and 10% each standardized to Guggulsterones. Each spec is typically characterized by two different test methods – UV and HPLC. The 2.5% material it typically tested by HPLC while the UV is at 10%. Additionally, there is also the pure Guggulsterones E&Z material available at a higher price point. Nutrient Innovations, Inc. maintains a competitive offering of Guggulsterone ingredients.