Citrus Aurantium  A thermogenic agent that produces a similar thermogenic effect as MaHuang the and is the "best substitute."1
Guarana Extract  Also shown to be thermogenic on its' own but when combined with other thermogenics like MaHuang is twice as powerful.2
White Willow Bark  Herbal form of aspirin which has been shown in studies when combined with ephedrine and caffeine to be safe and effective for weight loss.3
Chromium Picolinate  Helps regulate insulin levels and has been shown in research to increase lean muscle while decreasing fat percentages.4
St. John's Wort  Naturally effects serotonin levels in the body.5 Low serotonin levels have been associated with overeating and obesity.
L-Phenylalanine  Shown in research to be an effective appetite suppressant.6
NEW STRONGER FORMULA! Read the Thermo Phen Phen Press Release
1Preuss HG, DiFerdinando D, Bagchi M, Bagchi D. Citrus aurantium as a thermogenic, weight-reduction replacement for ephedra: an overview. J Med. 2002;33(1-4):247-64.
2Dulloo AG., et al. Potentiation of the thermogenic antiobesity effects of ephedrine by dietary methylxanthines: adenosine antagonism or phosphodiesterase inhibition. Metabolism: Clinical and Experimental 1992. 41;11;1233-1241.
3Daley P., et al. Ephedrine, caffeine and aspirin: safety and efficacy for treatment of human obesity. Int J Obes Metab Disord. 1993; 17:s73-78.
4G.W. Evans, Chromium Picolinate is an Efficacious and Safe Supplement. Int J. Sports Nutr 3 (1993): 117-22.
5P.Morazzoni and E. Bombardelli, Hypericum perforatum, Fitoterapia 66(1995):43-68.
6T. Silverstone and E. Goodall, The Clinical Pharmacology of Appetite Suppressant Drugs, Int J. Obes. 8.1 (1984):23-33