references
  
      U.S. Department of Health and Human Services: "Dietary Supplements for Weight Loss"
    
      U.S. Department of Health and Human Services: "Office of Dietary Supplements"
    
      U.S. Department of Health and Human Services: "National Center for Complementary and Integrative Health"
    
      The Mayo Clinic: "Bitter Orange Weight-Loss Supplements: Do They Work?"
    
      The Mayo Clinic: "Caffeine: Can It Help Me Lose Weight?"
    
      U.S. Food and Drug Administration: "Spilling the Beans: How Much Caffeine is Too Much?"
    
      The Cleveland Clinic: "Weight Loss With Herbals and OTC Products"
    
      Johns Hopkins Medicine: "Maintaining Weight Loss"
    
      U.S. Department of Health and Human Services: "Physical Activity Guidelines for Americans"
    
      Academy of Nutrition and Dietetics: "Staying Away from Fad Diets"
    




Thermogenic pills are often advertised and sold as a way to increase metabolism and lose weight.

Image Credit: Lecic/iStock/GettyImages

Image Credit: Lecic/iStock/GettyImages

      U.S. Department of Health and Human Services: "Dietary Supplements for Weight Loss"
    
      U.S. Department of Health and Human Services: "Office of Dietary Supplements"
    
      U.S. Department of Health and Human Services: "National Center for Complementary and Integrative Health"
    
      The Mayo Clinic: "Bitter Orange Weight-Loss Supplements: Do They Work?"
    
      The Mayo Clinic: "Caffeine: Can It Help Me Lose Weight?"
    
      U.S. Food and Drug Administration: "Spilling the Beans: How Much Caffeine is Too Much?"
    
      The Cleveland Clinic: "Weight Loss With Herbals and OTC Products"
    
      Johns Hopkins Medicine: "Maintaining Weight Loss"
    
      U.S. Department of Health and Human Services: "Physical Activity Guidelines for Americans"
    
      Academy of Nutrition and Dietetics: "Staying Away from Fad Diets"