Oral Glutathione. When Glutathione is taken orally it does a very poor job of raising intracellular Glutathione levels because it is quickly broken down in the digestive tract, predominately by the enzyme GGT (gamma-glutamyl-transferase) which is found in abundance in the human intestine.

Intracellular Glutathione. To produce Glutathione in our body we depend on our cells for its production. This is accomplished by specific nutrition known as precursors that our cells need to make its own Glutathione.

Glutathione precursors

N- acetyl- cysteine

Undenatured Whey Protein Isolate


The critical nutrient in the production of Glutathione is cysteine in a form that is digestible that can survive the long journey from the mouth to the cell.

The free amino acid cysteine is not itself is not very efficient as it is easily oxidised and that is why we need to use a drug like N- acetyl- cysteine, or a larger protein such as Undenatured Whey Protein Isolate.

Role of Glutathione

Glutathione is the major signalling and control molecule for all REDOX metabolic functions. It plays key roles in cellular detoxification of both organic and inorganic compounds. It also has the ability to sustain a strong immune response by supporting the function and multiplication of Leukocytes.

It is the immunomodulatory function of Glutathione that has driven the research on Glutathione’s use directly as an antiviral agent. There are many papers available that describe theses antiviral properties.

Glutathione Depleting Agents

  • Smoking
  • Alcohol
  • Caffeine
  • Acetaminophen
  • Drugs
  • Vigorous exercise
  • X-, Y- & UV radiation
  • Xenobiotics


Glutathione and Viral disease

Glutathione has documented effects against many different viral pathogens including



Hepatitis A, B, C

Herpes Simplex I, II



So it should not come as a surprise that vigorous efforts have been made into looking at whether Glutathione can help us in our strategies to combat COVID19 also known as SARS-CoV-2.