From own experience I can tell you, it was a short lived effect. My body reconginzed the additional enzymes and level it out.. + 1kg was the effect back those days. Not worth the money as far as I can tell.
As said might be a different story for anybody else.
Also from my experience, nothing beats consistency! Over eating on just regular food builds up stomach capacity, trains your brain to look for larger portions.. you get fat and there is no going back - you might keep that in mind.
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