References
- Karch S B. Ma-huang and the ephedra alkaloids. Toxicology and Clinical Pharmacology of Herbal Products, M J Cupp. Humana Press, Totowana, NJ 2000; 11–30
- United States Pharmacopeia: Drug Information for the Health Professional, Vol. 1. Micromedex, Greenwood Village, CO 2002
- Gurley B J, Wang P, Gardner S F. Ephedrine-type alkaloid content of nutritional supplements containing Ephedra sinica (ma-huang) as determined by high performance liquid chromatography. J Pharm Sci. 1998; 87: 1547–1553
- Josefson D. Herbal stimulant causes U.S. deaths. Br Med J. 1996; 312: 1378–1379
- Doyle H, Kargin M. Herbal stimulant containing ephedrine has also caused psychosis. Br Med J. 1996; 313: 756
- Nightingale S L. Warning issued about street drugs containing botanical sources of ephedrine. J Am Med Assoc. 1996; 275: 1534
- Nadir A, Agarawal S, King P D, Marchall J B. Acute hepatitis associated with the use of a Chinese herbal product, ma-huang. Am J Gastroenterol. 1996; 91: 1436–1438
- Ault A. FDA proposes limits on ephedrine supplements. Lancet 1997; 349: 1753
- Bunten W. A call for self-regulation. J Am Pharm Assoc. 1999; 39: 14
- Hahm H, Kujawa J, Augsburger L. Comparison of melatonin products against USP's nutritional supplements standards and other criteria. J Am Pharm Assoc. 1999; 39: 27–31
- Parasrampuria J, Schwartz K. Quality control of dehydroepiandrosterone dietary supplement products. JAMA 1998; 280: 1565, Letter
- Liberti L E, Der Marderosian A. Evaluation of commercial ginseng products. J Pharm Sci. 1978; 67: 1487–9
- King A B. The dietary supplement health and education act of 1994: Focus on labeling issues. Nutrition 1997; 13: 999–1001
- Special Report. Dietary supplements: Recent chronology and legislation. Nutr Rev. 1995; 53: 31–36
- Gurley B J, Gardner S F, Bubbard M A. Content versus label claims in Ephedra-containing dietary supplements. Am J Health Syst Pharm. 2000; 57: 963–9
- Betz J M, Gay M L, Mossoba M M, Adams S, Portz B S. Chiral gas chromato-graphic determination of ephedrine-type alkaloids in dietary supplements containing ma-huang. JAOAC Int. 1997; 80(2)303–315
- Hurlbut J A, Carr J R. Solid-phase extraction cleanup and liquid chromatogra-phy with ultraviolet detection of ephedrine alkaloids in herbal products. JAOAC Int. 1998; 81(6)1121–1127
- Liu Y-M, Sheu S-J, Chiou S-H, Chang H-C, Chen Y-P. A comparative study on commercial samples of Ephedrae herba. Planta Med. 1993; 59: 376–378
- Anonymous. Dietary supplements containing ephedrine alkaloids: Proposed Rule. 21 CFR 111. Fed Register 1997; 62(107)30677–724
- Eisenberg D M, Davis R B, Ettner S L, Appel S, Wilkey S, Van Rompay M, Kessler R C. Trends in alternative medicine use in the United States, 1990-1997: Results of a follow-up national survey. JAMA 1998; 280: 1569–1575