- Glutamine is considered to be a conditionally essential amino acid, which means that under certain circumstances, the body may require more glutamine than it can produce. In the body, glutamine functions as a major nitrogen transporter and is critical for the maintenance of healthy nitrogen balance.* Glutamine also acts as the primary fuel for the rapidly growing cells of the immune system and GI tract.* NOW® L-Glutamine Powder is a pure, free-form, non-essential amino acid and is the highest grade available. This product is sold by weight not volume. Natural color variation may occur in this product.
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