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Title: Herbal ephedra/caffeine for weight loss: A 6-month randomized safety and efficacy trial.
Author, Editor, Inventor: Boozer-C-N {a}; Daly-P-A; Homel-P; Solomon-J-L; Blanchard-D; Nasser-J-A; Strauss-R; Meredith-T
Author Address: {a} New York Obesity Research Center, St Luke's-Roosevelt Hospital Center, 1111 Amsterdam Avenue, WH 1029, New York, NY, 10025; E-Mail:
[email protected], USA
Source: International-Journal-of-Obesity. [print] May, 2002; 26 (5): 593-604.
Journal URL:
http://www.naturesj.com/ijo/index.html
Publication Year: 2002
Document Type: Article-
ISSN (International Standard Serial Number): 0307-0565
Language: English
Abstract: OBJECTIVE: To examine long-term safety and efficacy for weight loss of an herbal Ma Huang and Kola nut supplement (90/192 mg/day ephedrine alkaloids/caffeine). DESIGN: Six-month randomized, double-blind placebo controlled trial. SUBJECTS: A total of 167 subjects (body mass index (BMI) 31.8 +- 4.1 kg/m2) randomized to placebo (n = 84) or herbal treatment (n = 83) at two outpatient weight control research units. MEASUREMENTS: Primary outcome measurements were changes in blood pressure, heart function and body weight. Secondary variables included body composition and metabolic changes. RESULTS: By last observation carried forward analysis, herbal vs placebo treatment decreased body weight (-5.3 +- 5.0 vs -2.6 +- 3.2 kg, P < 0.001), body fat (-4.3 +- 3.3 vs -2.7 +- 2.8 kg, P = 0.020) and LDL-cholesterol (-8 +- 20 vs 0 +- 17 mg/dl, P = 0.013), and increased HDL-cholesterol (+2.7 +- 5.7 vs-0.3 +- 6.7 mg/dl, P = 0.004). Herbal treatment produced small changes in blood pressure variables (+3 to -5 mmHg, P ltoreq 0.05), and increased heart rate (4 +- 9 vs -3 +- 9 bpm, P < 0.001), but cardiac arrhythmias were not increased (P > 0.05). By self-report, dry mouth (P < 0.01), heartburn (P < 0.05), and insomnia (P < 0.01) were increased and diarrhea decreased (P < 0.05). Irritability, nausea, chest pain and palpitations did not differ, nor did numbers of subjects who withdrew. CONCLUSION: In this 6-month placebo-controlled trial, herbal ephedra/caffeine (90/192 mg/day) promoted body weight and body fat reduction and improved blood lipids without significant adverse events.