1. Mahady G.B., Gyllenhaal C., Fong HHS., Farnsworth NR.: Ginsengs: a review of safety and efficacy. Nutr. Clin. Care, 2000, 3, 2, 90-101.
2. Der Marderosian, A. Ed: The Review of Natural Products. St. Louis: Facts and Comparisons. 1999.
3 Schulz V., Hansel R., Tyler V.E.: Rational Phytotherapy: A Physician’s Guide to Herbal Medicine. New York: Springer, 2001.
4. Antonio J., Uelmen J., Rodriguez R., Earnest C.: The effects of Tribulus terrestris on body composition and exercise performance in resistance-trained males. Int. J. Sport Nutr. Exerc. Metab., 2000 Jun; 10, 2, 208-15.
5. Bell D.G., Jacobs I., Ellerington K.: Effect of caffeine and ephedrine ingestion on anaerobic exercise performance. Med. Sci. Sports. Exerc., 2001, 33, 8, 1399-403.
6. FDA Announces Rule Prohibiting Sale of Dietary Suplements Containing Ephedrine Alkaloids Effective. Media Inquires: 301-436-2335 Consumer Inquires: 888-INFO-FDA 2004 April 12.