The American Journal of Medicine
Volume 118, Issue 9 , Pages 998-1003 , September 2005

Hemodynamic effects of ephedra-free weight-loss supplements in humans

References 

  1. US Food and Drug Administration. Questions and answers about FDA’s actions on dietary supplements containing ephedrine alkaloids . 2004; Available at: http://www.fda.gov/oc/initiatives/ephedra/february2004/qa_020604.html. Accessed May 28
  2. Shekelle PG , Hardy ML , Morton SC , et al.   Efficacy and safety of ephedra and ephedrine for weight loss and athletic performance . JAMA . 2003;289:1537–1545
  3. Samenuk D , Link MS , Homoud MK , et al.   Adverse cardiovascular events temporally associated with ma huang, an herbal source of ephedrine . Mayo Clin Proc . 2002;77:12–16
  4. Haller CA , Benowitz NL . Adverse cardiovascular and central nervous system events associated with dietary supplements containing ephedra alkaloids . N Engl J Med . 2000;343:1833–1838
  5. Fugh-Berman A , Myers A . Citrus aurantium, an ingredient of dietary supplements marketed for weight loss (current status of clinical and basic research) . Exp Biol Med . 2004;229:698–704
  6. D’Andrea G , Terrazzino S , Fortin D , Cocco P , Balbi T , Leon A . Elusive amines and primary headaches (historical background and prospectives) . Neurol Sci . 2003;24(suppl 2):S65–S67
  7. Brown CM , McGrath JC , Midgley JM , et al.   Activities of octopamine and synephrine stereoisomers on α-adrenoceptors . Br J Pharmacol . 1988;93:417–429
  8. Benowitz NL . Clinical pharamcology of caffeine . Ann Rev Med . 1990;41:277–288
  9. Brown NJ , Ryder D , Branch RA . A pharmacodynamic interaction between caffeine and phenylpropanolamine . Clin Pharmacol Ther . 1991;50:363–371
  10. Haller CA , Jacob P , Benowitz NL . Enhanced stimulant and metabolic effects of ephedrine and caffeine . Clin Pharmacol Ther . 2004;75:259–273
  11. Bouchard NC , Greller HA , Hoffman RS , Nelson LS . Ischemic stroke from “ephedra-free” dietary supplement containing synephrine (abstract) . J Toxicol Clin Toxicol . 2004;42:137
  12. Nasir JM , Durning SJ , Ferguson M , Barold HS , Haigney MC . Exercise-induced syncope associated with QT prolongation and ephedra-free Xenadrine . Mayo Clinic Proc . 2004;79:1059–1062
  13. Nykamp DL , Fackih MN , Compton AL . Possible association of acute lateral-wall myocardial infarction and bitter orange supplement . Ann Pharmacother . 2004;38:812–816
  14. Adverse Event Reporting for Dietary Supplements (An Inadequate Safety Valve) . Washington, DC: Office of the Inspector General, HHS; 2001; OEI-01-00-00180
  15. Colker CM , Kalman DS , Torina GC , Perlis T , Street C . Effects of Citrus aurantium extract, caffeine, and St. John’s wort on body fat loss, lipid levels, and mood states in overweight healthy adults . Curr Ther Res . 1999;60:145–153
  16. Penzak SR , Jann MW , Cold JA , Hon YY , Desai HD , Gurley BJ . Seville (sour) orange juice (synephrine content and cardiovascular effects in normotensive adults) . J Clin Pharmacol . 2001;41:1059–1063
  17. Calapai G , Firenzuoli F , Saitta A , Squadrito F , et al.   Antiobesity and cardiovascular toxic effects of Citrus aurantium extracts in the rat (a preliminary report) . Fitoterapia . 1999;70:586–592
  18. http://www.randomization.com. Accessed June 2, 2004.
  19. Jacob P , Haller CA , Duan M , Yu L , Peng M , Benowitz NL . Determination of ephedra alkaloids and caffeine levels in dietary supplements and biological fluids . J Anal Toxicol . 2004;28:152–159
  20. Hengstmann JH , Aulepp H . Pharmacokinetics and metabolism of 3H-synephrine . Arzneimittelforschung . 1978;28(12):2326–2331

 Drs. Haller and Benowitz have served as paid expert witnesses in litigation involving manufacturers of dietary supplements.

PII: S0002-9343(05)00200-7

doi: 10.1016/j.amjmed.2005.02.034

The American Journal of Medicine
Volume 118, Issue 9 , Pages 998-1003 , September 2005