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GLUTATHIONE, a naturally occurring protein, is called a peptide. It is composed of three amino acids: glycine, glutamine and cysteine. Cysteine contains sulfur and gives glutathione its sulfuric aroma. It also plays a major role in glutathione's...

Methylcobalamin is the form of vitamin B-12 that supports brain and nerve health; it is called "neurologically active." Your liver has to convert regular B-12 (cyanocobalamin) into methylcobalamin. People over 50, vegans, senior citizens and those with...

* A Riordan Clinic Best Seller *    Melatonin is a powerful hormone secreted by the pineal gland located in the brain. Its secretion is stimulated by the dark and inhibited by light, and it aids in the regulation of the body's circadian rhythm,...