Evidence supporting the use of: L-cysteine
For the health condition: Hepatitis

Links: Go back one page, Tool main page, Ingredients list, Health conditions list, Body systems list

Synopsis

Source of validity: Scientific
Rating (out of 5): 2

L-cysteine is an amino acid with antioxidant properties, often administered in the form of N-acetylcysteine (NAC), a precursor to glutathione. There is some scientific rationale for its use in supporting liver health, including hepatitis, though the level of evidence for direct efficacy in hepatitis is limited and indirect. Hepatitis, being an inflammatory condition of the liver, is associated with oxidative stress and depletion of glutathione, a key antioxidant in liver cells. NAC has been shown to replenish glutathione stores and is well-established in the management of acetaminophen-induced liver toxicity. Some studies have explored the use of NAC as an adjunct therapy in acute and chronic hepatitis (especially hepatitis B and C), suggesting potential benefits in improving liver function tests and reducing oxidative damage. However, these studies are generally small, have methodological limitations, and results are inconsistent.

L-cysteine itself (not NAC) is less commonly studied, but as a glutathione precursor, it may theoretically provide similar benefits. There is no robust clinical evidence supporting L-cysteine's use as a primary treatment for hepatitis, and it is not standard of care. Nonetheless, the antioxidant mechanism and some supportive preclinical and small clinical studies provide a scientific rationale for its adjunctive use. Overall, while there is some scientific basis, the evidence is not strong, and L-cysteine/NAC should not replace established antiviral or medical therapies for hepatitis.

More about l-cysteine
More about Hepatitis

Products containing l-cysteine

Metagenics BioPure Protein® Powder
Metagenics Bone Builder Active
Metagenics Clear Change 10-Day Detox Program with UltraClear Plus Berry
Metagenics Clear Change 10-Day Detox Program with UltraClear Plus pH
Metagenics Clear Change 10-Day Detox Program with UltraClear Plus pH Pineapple Banana
Metagenics Clear Change 10-Day Detox Program with UltraClear Plus Pineapple Banana
Metagenics Clear Change 10-Day Detox Program with UltraClear Plus Vanilla
Metagenics Clear Change 28-Day Detox Program with UltraClear Plus Berry
Metagenics Clear Change 28-Day Detox Program with UltraClear Plus pH Pineapple Banana
Metagenics Clear Change 28-Day Detox Program with UltraClear Plus pH Vanilla
Metagenics Clear Change 28-Day Detox Program with UltraClear Plus Pineapple Banana
Metagenics Clear Change 28-Day Detox Program with UltraClear Plus Vanilla
Metagenics Collagenics®
Metagenics Echinacea Synergy
Metagenics GI Sustain™ Powder
Integrative Therapeutics Glutathione Cell Defense
Vitabase Hair, Skin & Nails Formula
Metagenics ImmuCore
Metagenics Immune Defense Pack
Designs For Health PaleoCleanse Plus™
Designs For Health PaleoCleanse Plus™
Designs For Health PaleoCleanse Plus™ Detox Program
Designs For Health PaleoCleanse Plus™Chocolate Detox Kit
Metagenics Perfect Protein® Pea & Rice Chocolate Powder
Metagenics Perfect Protein Pea & Rice Vanilla Powder
Metagenics Perfect Protein Whey Chocolate
Metagenics Perfect Protein Whey Vanilla
Designs For Health Plant Protein Cleanse
Designs For Health Plant Protein Cleanse Plus™ 570g
Vitabase Super Antioxidant Formula
Metagenics Ultra Glucose Control® Chocolate
Metagenics Ultra Glucose Control Chocolate
Metagenics Ultra Glucose Control Vanilla
Metagenics Ultra Glucose Control Vanilla
Metagenics Ultra Potent-C 1000
Metagenics Ultra Potent-C 500
Metagenics Ultra Potent-C Chewable
Metagenics Ultra Potent-C Powder
Metagenics UltraClear Detox Powder
Metagenics UltraClear Plus® Detox Powder
Metagenics UltraClear Plus Detox Powder Berry
Metagenics UltraClear Plus Detox Powder Pineapple/Banana
Metagenics UltraClear Plus pH Detox Powder Pineapple/Banana
Metagenics UltraClear Plus pH Detox Powder Vanilla
Metagenics UltraGI Replenish® Chocolate
Metagenics UltraGI Replenish Chocolate
Metagenics UltraGI Replenish Vanilla
Metagenics UltraGI Replenish Vanilla
Metagenics UltraInflamX Plus 360°® Chocolate/Orange
Metagenics UltraInflamX Plus 360° Mango
Metagenics UltraInflamX Plus 360° Mango
Metagenics UltraInflamX Plus 360° Orange
Metagenics UltraInflamX Plus 360° Original Spice
Metagenics UltraInflamX Plus 360° Pineapple/Banana
Metagenics UltraInflamX Plus 360° Pineapple/Banana
Metagenics UltraMeal Advanced Protein® Dutch Chocolate
Metagenics UltraMeal Advanced Protein French Vanilla
Metagenics UltraMeal Advanced Protein Plain
Metagenics UltraMeal Cardio 360°® Pea/Rice Chocolate
Metagenics UltraMeal Cardio 360° Pea/Rice Vanilla