Glutathione and Immunocal


IMMUNOCAL is a patented undenatured whey protein isolate rich in bonded cysteine for maintenance of a strong immune system.

Glutathione and Immunocal go hand in hand - Immunocal is clinically proven to raise and maintain elevated intracellullar glutathione levels safely and naturally by supplying the body with the critical glutathione precursor - cysteine, in the form that survives digestion and can enter a cell.

To review what glutathione is, visit our page

Glutathione (GSH).

Immunocal is made from unpasteurized cow’s milk free of antibiotics and hormones. It is 90% pure protein which makes the amount of available unadulterated bonded cysteine the highest possible. Lactose content is less that 1% which ensures its safety for lactose-intolerant people.

Following digestion, the cysteine in Immunocal remains as the stable form cystine - two molecules of cysteine linked by a disulfide bond.

In common processing of milk (repeated pasteurization, especially ultra-pasteurization, homogenization and mechanical stress) these molecular bonds are destroyed causing the cysteine bioavailability to be greatly decreased, leaving cysteine unable to enter cells and thus be used for building glutathione. Unpasteurized milk is exactly the way our ancestors used to get bonded cysteine into the cells for glutathione production.

Immunocal's unique and patented manufacturing process of cold filtration carefully preserves this all-important disulfide bond in the cystine molecule making Immunocal a unique bonded cysteine delivery system.


PDR Immunocal is recognized as a biologically active whey protein that improves human immune response.

It is listed in the most trusted and prestigious publications which medical doctors, pharmacists, nurses and other medical personnel refer to on a daily basis:

  • The Physicians' Desk Reference (PDR) - the official reference book for all doctors in the US that lists all the substances available for prescription. Read the PDR entry for Immunocal here.

  • The Compendium of Pharmaceuticals and Specialties (CPS) - reference book for Canadian doctors and pharmacists. Read the CPS entry for Immunocal here.

  • Immunocal holds Health Canada Natural Product Number as a natural source of glutathione building block cysteine to maintain a strong immune system.

  • Patented in the US as an anti-cancer therapeutic composition.

  • Immunocal is classified by the FDA as "GRAS" (generally recognized as safe) and has no known side effects.


The winner of the 2008 Nobel Prize in Medicine Dr. Luc Antoine Montagnier, who is a world renowned expert on immune deficiencies, included an entire chapter on Immunocal in one of his books "Oxidative Stress in Cancer, AIDS, and Neurodegenerative Diseases".

Chapter 42 in this book is dedicated to the research paper "Nutriceutical modulation of glutathione with a humanized native milk serum protein isolate Immunocal: application in AIDS and cancer" where it states that "glutathione is of major significance in cellular antioxidant activity, and that Immunocal functioning as a cysteine delivery system can enhance glutathione synthesis..."

Dr. Montagnier received the 2008 Nobel Prize for his 1984 discovery of the human immunodeficiency virus (HIV), together with Dr. Françoise Barré–Sinoussi.

In 1994, Dr. Montagnier drew attention to the promissing effects of Immunocal, a proven precursor of glutathione, in his opening speech at the 10th International AIDS Conference in Yokohama, Japan.

Dr. Mark Hyman, a practicing physician and New York Times bestselling book author, advises on raising glutathione in his article “Glutathione: The Mother of All Antioxidants” (Huffington Post, 6/10/2010): “ Try bioactive whey protein. This is great source of cysteine and the amino acid building blocks for glutathione synthesis. As you know, I am not a big fan of dairy. But this is an exception -- with a few warnings. The whey protein MUST be bioactive and made from non-denatured proteins ("denaturing" refers to the breakdown of the normal protein structure). Choose non-pasteurized and non-industrially produced milk that contains no pesticides, hormones, or antibiotics. Immunocal is a prescription bioactive non-denatured whey protein that is even listed in the Physician's Desk Reference.”

Dr. James F. Balch, best-selling author of "Prescription For Nutritional Healing" states in his book that "It's my opinion that everyone should be taking Immunocal. Today, there's no better way to boost your immune system."

Dr. Wulf Droge, a leading expert on immunology and cell biology, stated "Many the conclusion that Immunocal is effective in maintaining a strong immune system." In 1989 Dr. Droge and his colleagues were first to discover that HIV-positive patients have abnormally low cysteine and glutathione levels.


Immunocal is patented in the US and Canada. It also holds 40 international patents worldwide.

Most importantly, Immunocal has METHOD OF USE patents that recognize it as a biologically active whey protein that improves the human immune response. Such a patent means that even if the process of manufacturing is duplicated, another undenatured whey protein cannot state that it is "CLINICALLY PROVEN to stimulate the immune system" and "significantly raise and maintain glutathione levels".

US Patents: (each opens in a new window)

5,230,902 - "Undenatured whey protein concentrate to improve active systemic humoral immune response".

5,290,571 - "Biologically active whey protein concentrate".

5,451,412 - "Biologically active undernatured whey protein concentrate as food supplement".

5,456,924 - "Method of treatment of HIV-seropositive individuals with dietary whey proteins".

5,888,552 - "Anti-cancer therapeutic compositions containing whey protein concentrate".


immunocal research Immunocal has 35 years of valid clinical research that proved its effiсacy. This research has been peer reviewed and published in reputable accredited medical journals.

The observed immune boosting effects of Immunocal which have been originally discovered by Dr. Gustavo Bounous at McGill University (Montreal, Canada) have been validated by numerous independent research centers worldwide: in Germany, Japan, Australia, France, United States and in Nova Scotia (Canada).

Originally done in the lab and on animals, Immunocal has now for years been researched in human clinical trials using a double-blind placebo-controlled method - the highest standard in medical research.

Human testing has been successfully conducted on the people with diseases, the elderly, healthy adults, children and professional athletes.

The results of Immunocal trials are subject to INDEPENDENT verification and review by medical professionals and government agencies.

The following link will take you to all up-to-date research: Immunocal Research Summary

More information on Immunocal is on our page Immunocal: Frequently Asked Questions

Disclaimer: No claims are made that Immunocal will prevent, treat or cure any sickness or disease. It is clinically proven to raise and maintain glutathione levels by supplying the body with the crucial glutathione precursor cysteine.

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