what is a small capsule that is half purple, half grey and has st-3ef on one side and 224/3850 on the other??

Not Medical Advice: The capsule with imprint ST 3EF 224 3850 and has purple and grey color is a Stacker 3 Metabolizing Fat Burner with Chitosan, Capsule, an OTC Dietary Supplement.

  • Generic Name: Proprietary Blend of Kola Nut, Cactus Extract, White Willow Bark, Grapefuit Extract, Chitosan; Caffeine (Anhydrous); Tri-Guarcinia Complex
  • Strength: 225 mg; 250 mg; 25 mg
  • Manufacturer: NVE Pharmaceuticals
  • Size (mm): 20 X 7

According to Amazon.com, Stacker3 with Chitosan is a powerful way to help you get rid of ugly, unwanted body fat while receiving a powerful boost of energy. Its formula also helps boost energy so you can get that extra pump you need while working out.

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Stacker 3 Metabolizing Fat Burner with Chitosan, Capsules, 100-Count Bottle