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No idea, but see what Dr. John Berardi has to say about supplements in general:
http://www.precisionnutrition.com/fat-loss-course-for-women-day-4
Dominique | Finland
Ionic, Aria, Flyer, TrendWeight | Windows 7, OS X 10.13.5 | Motorola Moto G6 (Android 9), iPad Air (iOS 12.4.4)
Take a look at the Fitbit help site for further assistance and information.
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