Popular Supplements for Weight Control Learn about popular supplements that some dieters have found helpful in the struggle to lose—and keep off—unwanted extra pounds. Select a supplement: 5-HTP 7-KETO Arginine Bitter Orange Casein Protein Cayenne Chitosan Chromium CLA Coleus DHEA Fiber Green Tea Guaraná Guggul HMB Hydroxycitric Acid (HCA) L-Tyrosine Pyruvate Rice Protein Soy Protein Spirulina (Blue-Green Algae) St. John’s Wort Garcinia Cambogia Whey Protein