I hope the following infomation helps to answer your question : How can your body use Glutathione?
In human studies, oral doses of glutathione had little effect in raising blood levels. Furthermore you can have adequate amount of glutathione in common foods.Supplements of vitamin C can help the body to manufacture Glutathione.Preliminary evidence has suggested that absorption of glutathione can occur in the mouth when glutathione tablets are placed between the teeth and the inner cheek.
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