More effective: pills or IV injections?
According to the European Journal of Clinical Pharmacology, a single dose of 3g of dietary glutathione taken orally has no significant clinical benefits in increasing the circulation of glutathione in the body since it can easily be digested in the stomach and is not very well absorbed in the intestines. A study published in the American Journal of Clinical Nutrition shows that taking intravenous (IV) injections may provide an effective and direct route to increase glutathione concentration in the body, but it is expensive and uncomfortable.
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