THE PURSER WELLNESS ENCYCLOPEDIA

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Nutrient referenceSep 23, 2026

Cysteine

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An amino acid used in protein synthesis and other metabolic processes. Also called: Cysteine A building block for glutathione Dr. Purser’s course connects cysteine and NAC with the raw-material side of glutathione production. CBS and CTH he…

Nutrient referenceSep 23, 2026

L-Glutamine

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An amino acid used in protein synthesis and other metabolic processes. Also called: Glutamine What it does An amino acid used in protein synthesis and other metabolic processes. How supplementation is approached Review glutamine within prot…

Nutrient referenceSep 23, 2026

Iodine

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Is needed to make thyroid hormones. Also called: Iodine What it does Is needed to make thyroid hormones. Possible deficiency symptoms Low intake can contribute to an enlarged thyroid and impaired thyroid hormone production. Symptoms are not…

Nutrient referenceSep 23, 2026

Iron

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Helps hemoglobin carry oxygen and supports many cellular processes. Also called: Iron Energy is not enough reason to add iron Dr. Purser’s course connects iron with oxygen transport and energy while identifying it as a safety-sensitive mine…

Nutrient referenceSep 23, 2026

Isoleucine

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An amino acid used in protein synthesis and other metabolic processes. Also called: Isoleucine What it does An amino acid used in protein synthesis and other metabolic processes. How supplementation is approached Isoleucine is a branched-ch…

Nutrient referenceSep 23, 2026

Leucine

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An amino acid used in protein synthesis and other metabolic processes. Also called: Leucine What it does An amino acid used in protein synthesis and other metabolic processes. How supplementation is approached Leucine is a branched-chain es…

Nutrient referenceSep 23, 2026

L-Lysine

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An amino acid used in protein synthesis and other metabolic processes. Also called: Lysine What it does An amino acid used in protein synthesis and other metabolic processes. How supplementation is approached Lysine is an essential amino ac…

Nutrient referenceSep 23, 2026

Manganese

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Helps several enzymes, including a mitochondrial antioxidant enzyme, function. Also called: Manganese The mitochondrial SOD connection Manganese helps support SOD2, an antioxidant enzyme that works in mitochondria. Enzymes and the nutrients…

Nutrient referenceSep 23, 2026

L-Methionine

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An amino acid used in protein synthesis and other metabolic processes. Also called: Methionine Where the cycle begins Methionine is an essential amino acid used to make proteins. It also enters a pathway involving SAM, SAH, and homocysteine…

Nutrient referenceSep 23, 2026

NADH

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…uced form of a coenzyme involved in cellular energy reactions. Also called: NADH What it does The reduced form of a coenzyme involved in cellular energy reactions. How supplementation is approached NADH belongs to cellular-energy chemistry,…

Nutrient referenceSep 23, 2026

Omega-3

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A family of fats that includes ALA, EPA and DHA. Also called: Omega-3 Food source, chemical form and membrane function Dr. Purser’s course connects omega-3s with membranes, brain function and inflammatory/metabolic teaching. FADS1 and FADS2…

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