THE PURSER WELLNESS LIBRARY

Follow a question.
Find a connection.

A COURSE FOR YOUR CURIOSITYMake sense of your testing

3 chapters, at your pace

Explore the course
Explore all 3 matching courses
New to this subject? Start with this free introduction.What is Intracellular Testing?

457 discoveries52 matching listings grouped; alternative sources stay available.

What’s searchable?
YouTubeJan 5, 2026

VARS Glutathione - How to Use

Dr. Purser explains how glutathione works, how to use the product, and how much to use. Explore the antioxidant similarities of glutathione to Vitamin C (ascorbic acid) such as antiviral properties, blood vessel health, bone health, and support of hormone production. Discover how CD4 and CD8 T-killer white blood cells rely on glutathione to provide immunity and remove viruses, toxins, and lactic acid from the body. Learn how Metallothionein requires glutathione to complete the functioning molecule that removes heavy metals from the bloodstream. Discover the mental clarity and well-being that c

YouTubeJan 5, 2026

What is Glutathione?

Dr. Purser shares facts about glutathione. Learn about tripeptide amino acids. Discover information on glutathione from the National Institutes of Health (NIH) and the Food and Drug Administration (FDA). Learn the definition of VARS (Validated, Absorbable, Reduced, and Stable) and why glutathione needs to have all these to work properly. Explore the antioxidant similarities of glutathione to Vitamin C (ascorbic acid) such as antiviral properties, blood vessel health, bone health, and support of hormone production. Learn how CD4 and CD8 T-killer white blood cells rely on glutathione to provide

YouTubeJan 5, 2026

When Do I Take CoQ10?

Dr. Purser shares a few insights as to when you should take CoQ10 (Coenzyme Q10). Learn how CoQ10 relates to hypothyroidism and cardiovascular health. Explore why to take CoQ10 in combination with a lipid lowering statin medication. Discover how CoQ10 helps relieve fatigue. Learn about SpectraCell Laboratories intracellular comprehensive micronutrient panels. Contact us at (801) 796-7667 or info@danpursermd.com for help. Check back often for the newest updates!

YouTubeJan 5, 2026

What Causes Chronic Fatigue Syndrome?

Do you know what causes chronic fatigue? Dr. Purser explains the top causes of Chronic Fatigue Syndrome (CFS) and shares what steps to take to feel normal again. Discover why CFS is a symptom of underlying conditions and what the treatment of underlying causes of CFS includes. Dr. Purser dispels the myth of medication deficiency related to CFS symptoms. Discover the relationship of nutritional deficiencies, hormone imbalance, and poorly understood genetic causes from MTHFR deficiency to fatigue. Learn what contributes to fatigue when the absorption of Vitamin B12, folate, pantothenate, and oth

YouTubeJan 5, 2026

Vitamin K - Why Do I Need It?

Do you struggle with osteoporosis or bleeding disorders? Learn why Vitamin K is critical to bone density and prevention of osteoporosis. Discover the relationship of Vitamin K deficiency and bleeding disorders such as borderline hemophilia, joint bleeding disorders, haemarthrosis (bleeding into joint spaces), and how Vitamin K is critical for proper clotting. Explore why Vitamin K2 is essential, and why a combination of fat-soluble Vitamins A, D, and K should be taken together. Learn about contraindication of Vitamin K for patients taking blood thinners. Contact us at (801) 796-7667 or info@da

YouTubeJan 5, 2026

What You Don't Know About Vitamin D3 Deficiency

Dr. Purser explains how this deficiency may contribute to new onset of Type 1 diabetes, and how it relates to insulin receptors. Explore other symptoms of this deficiency such as osteoporosis, fatigue, and pallor. Discover how serum and intracellular laboratory testing reveals Vitamin D3 deficiency. Learn how Vitamin D2 is converted to Vitamin D3 in sunlight. Contact us at (801) 796-7667 or info@danpursermd.com for help. Check back often for the newest updates!

YouTubeJan 5, 2026

Neuropathy Caused by Vitamin Deficiency?

Explore the relationship of vitamin deficiency and neuropathy, a painful and disabling condition. Learn how a SpectraCell Comprehensive Nutritional Panel can help reveal intracellular deficiencies. Explore the relationship of how genetic diseases, such as MTHFR, relate to neuropathy. Discover how Methyl B12 (Methylcobalamin) may treat neuropathy. Contact us at (801) 796-7667 or info@danpursermd.com for help. Check back often for the newest updates!

YouTubeJan 5, 2026

MTHFR and The 85% Solution

Do you have problems with depression but most antidepressants made it worse? Are you fatigued all the time despite stimulants and amphetamines doctors readily prescribe? Do regular vitamins give you a stomach aches and nausea? The newest book from best-selling (ten #1 books on Amazon) author Dan Purser MD addresses these issues. Learn how most of the United States population carries the gene for this mysterious disorder, MTHFR. An increasing number of people realize they suffer from symptoms of MTHFR (methylation problems, folate deficiencies, and lack of methylfolate). Learn how it's killing

YouTubeJan 5, 2026

Thyroid Medications Recommended by Dr. Purser

Dr. Purser shares his insights on the best thyroid medications. Discover how chemically made, bioidentical synthetic medications such as L-Thyroxine or Synthroid (T4) safely mimic natural substances. Learn how pituitary function is related to TSH, and how damaged pituitaries cannot produce TSH. Dr. Purser covers recommended dosages of supplements including Nature-Throid, Armour-Thyroid, compounded Liothyronine (T3), and compounded T4. Explore how a 5 Prime Deodinase deficiency (or resistance) may prevent conversion of T4 to T3 in older and vitamin-deficient patients. Learn how a combination of

YouTubeJan 5, 2026

What is MTHFR?

Dr. Purser explains the diagnosis and treatment of MTHFR (methylenteterahydrofolate reductase enzyme deficiency disease). Learn the genetic component of this illness (such as C677T or A1298C) and how it affects the body's inability of methylation to convert carbohydrates into ATP (Adenosine Triphosphate). Discover how the complex enzyme pathways of the Krebs cycle and citric acid cycle convert carbohydrate molecules into ATP molecules in the mitochondria. Explore the relationship of MTHFR to vitamin and hormone deficiencies while understanding how vitamin supplements can replace key missing (u

YouTubeJan 5, 2026

Benefits of Fasting

Dr. Purser shares the benefits of fasting in everyday life. Have you ever tried a 72-hour fast? The benefits of fasting include reduction of premalignant stem cells and chance of cancer. Learn why cancer cells require glucose and how fasting reduces lipids and inflammation. Dr. Purser also discusses the need for careful monitoring of diabetic patients who choose to fast. Learn about precautions of fasting and the need to intake fluids, electrolytes, vitamins, and medications. Contact us at (801) 796-7667 or info@danpursermd.com for help. Check back often for the newest updates!

Best match puts all-term matches before partial matches and related reading. Identical social posts and matching long titles across other sources are grouped when access is the same. Search covers published titles, descriptions, available article text, report overviews, and the full text of the nutrient, gene and learning-essential reference pages. Books, uploaded chapters and downloads-page reports are searchable through selected editorial guides and topic names; the original files and full book text are not published. Full Drive reports are not copied into search. Substack subscriber titles and public summaries are included; full subscriber content opens on Substack. Video transcripts are added when available.