Advanced Lash The thermogenic effect of ephedrine was studied in five overweight women. A single oral dose of 1 mg/kg body weight was given to the five women and studied by indirect calorimetry before, during, and 2 months after chronic treatment of ephedrine (20 mg perorally 3 times daily). The extra consumption of oxygen caused by the single dose of ephedrine was 1.31 before treatment, 7.0