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

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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.

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Other ingredients used for Hepatitis

Achyranthes
Aerva lanata
Agrimonia pilosa
AHCC
Ajuga
Albumin
Algae
American Liverleaf
Andrographis
andrographolide
Angelica
Antrodia camphorata
aster root
astragalin
astragaloside
astragalus
atractylone
aucubin
Auricularia
Baccharoides anthelmintica
bacteria
bael
baicalin
Basidiomycota
Bassia scoparia
bayleaf
BCAA
Bergenia
bergenin
betulinic acid
bitter grass
black cumin
black root
black seed
blackboard tree
Bombax
Borassus aethiopum
borassus palm
borotutu
branched-chain amino acids
Broussonetia
Bupleurum
bupleurum falcatum
burdock
C-phycocyanin
Caesalpinia crista
Carthamus
cat's claw
caterpillar mushroom
Celosia
chaga mushroom
Chinese fleeceflower
Chinese silkvine
chirata
Clerodendrum indicum
commiphora
Coptis chinensis
cordyceps
corilagin
coriolus mushroom
Cynodon dactylon
cytokines
dandelion
Desmodium
Dianthus
Ficus simplicissima
flat-stem milk-vetch
flavonolignan
Flueggea suffruticosa
fucoidan
ganoderma
Globulins
Glucan peptides
Glutathione
Glycyrrhetinic acid
Glycyrrhizin
green chiretta
Hygrophila
Hyperoside
Immunoglobulin G
Indian bael
Indian coraltree
isosilybin
jujube
knotweed
L-cysteine
L-glutathione
labrador tea
Lactoferrin
Lentinula edodes mycelia
lichen
licorice root
Ligustrum
lingzhi
liquid liver fractions
little ironweed
Marine lipid
Milk thistle
Momordica
Morning glory
Morus
Myrrh
N-acetyl-cysteine (NAC)
Neoandrographolides
Nymphaea nouchali
oleanolic acid
omega-3 fatty acids
Onosma bracteatum
oregon grape
ornithine L-aspartic acid
Oroxylum indicum
Oxymatrine
pagoda tree
Palo Azul
parsley
Patrinia
paw paw
peony
Phellodendron
Picroside
Pluchea
plum fruit
Polygonum
polysaccharides
Portulaca
prebiotic blend (proprietary)
protein
punarnava
reishi mushroom
rhubarb
rice
Rubia cordifolia
Rubia yunnanensis
Sarivan
sarsaparilla
Schisandrins
Schizandrol A
seaweed
selenium
shiitake mushroom
Silybin
Silybum
Silychristin
Silydianin
silymarin
Sophora
spirulina
Stereospermum
Sulfated polysaccharide
Sumac
Swertia
Sword Bean
Szechuan lovage
Tamarind
Taraxacum
Terminalia
Tinospora cordifolia
Trametes
Tremella
Turkey tail mushroom
turmeric
Varuna
vitamin C
vitamin E
Wax Gourd
Yin Chen
Zinc
Zucchini

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Metagenics Clear Change 10-Day Detox Program with UltraClear Plus pH
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Designs For Health PaleoCleanse Plus™
Designs For Health PaleoCleanse Plus™
Designs For Health PaleoCleanse Plus™ Detox Program
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Metagenics Ultra Glucose Control® Chocolate
Metagenics Ultra Glucose Control Chocolate
Metagenics Ultra Glucose Control Vanilla
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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
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Metagenics UltraInflamX Plus 360° Mango
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Metagenics UltraInflamX Plus 360° Orange
Metagenics UltraInflamX Plus 360° Original Spice
Metagenics UltraInflamX Plus 360° Pineapple/Banana
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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