Glutathione Precursor Complex: Major Antioxidant, Liver Detoxification, Cellular Protection, Mitochondrial Energy and Immunity

Glutathione Precursor Complex, Swanson is an advanced dietary supplement formulated to support one of the body's most important "guardians": glutathione, the essential intracellular antioxidant involved in protection against oxidative stress, liver detoxification processes, immune support, and mitochondrial function. Glutathione is present in almost all cells and acts as a biochemical shield against free radicals, toxins, and metabolic stress generated by modern lifestyle rhythm.

Over time, glutathione levels can decrease due to exposure to pollutants, smoking, stress, unbalanced diet, intense effort, aging, or persistent inflammatory processes. Therefore, the modern strategy is not just to "take glutathione," but to intelligently support its production and recycling through key precursors and cofactors working synergistically. This is exactly the idea behind the formula: combining essential amino acids for glutathione synthesis, compounds that regenerate oxidized glutathione into active form, and extracts that support the liver – the detoxification center.

The formula includes: Vitamin C (100 mg), BIOSINT™ Acetyl-L-Carnitine (100 mg), L-Glutamine (100 mg), N-Acetyl-L-Cysteine / NAC (100 mg), Milk Thistle Extract standardized to 80% silymarin (50 mg), TMG/trimethylglycine from BetaPower® betaine (50 mg), R-ALA – R-fraction alpha-lipoic acid (37.5 mg), and Setria® L-Glutathione reduced (37.5 mg). This combination is oriented both toward the "raw material" for glutathione (especially cysteine) and toward chain antioxidant protection (vitamin C, R-ALA) and liver support (milk thistle), plus methylation support and homocysteine balance (TMG), processes connected with detoxification and cellular regeneration.

Detailed Benefits of Glutathione Precursor Complex

 

• Supporting glutathione levels: essential intracellular antioxidant

Glutathione (GSH) is considered the "master antioxidant" because it works inside the cell, where oxidative stress can affect DNA, proteins, and cell membranes. The body produces it from three amino acids (glutamate, cysteine, and glycine), and cysteine is usually the limiting link. Therefore, NAC is a strategic precursor, and the presence of Setria® reduced glutathione completes the formula in an efficiency-oriented way.

May contribute to:
✅ maintaining optimal glutathione levels in cells
✅ protection against free radicals and oxidative stress
✅ supporting cell membrane integrity and mitochondrial function
✅ better metabolic resilience during demanding periods

 

• Liver detoxification and biotransformation: support for the liver

The liver is the main detoxification organ, and glutathione is directly involved in the phases of neutralizing and eliminating unwanted compounds. Milk thistle (80% standardized silymarin) is known for liver support and antioxidant protection at the hepatocyte level. Alongside glutathione and precursors, the formula supports a biochemical "ecosystem" useful for natural detoxification processes.

May support:
✅ normal liver function in biotransformation processes
✅ liver antioxidant protection, useful in daily exposures
✅ supporting the metabolic flow of endogenous detoxification
✅ maintaining overall comfort associated with "clean" metabolism

 

• Antioxidant recycling: Vitamin C + R-ALA for defense system regeneration

Antioxidants function in networks. Vitamin C helps maintain antioxidant capacity and can support the recycling of other antioxidants. R-ALA (R-fraction of alpha-lipoic acid) is a versatile antioxidant, associated with regenerating other antioxidants and supporting energy metabolism. Together, they can support redox balance and protect the cell during periods of increased oxidative stress.

May contribute to:
✅ maintaining a complete, chain antioxidant response
✅ supporting the regeneration of antioxidants used in neutralization
✅ protection against oxidative stress induced by lifestyle
✅ better cellular resistance to repetitive demands

 

• Mitochondrial energy and metabolism: the role of acetyl-L-carnitine

Acetyl-L-carnitine (ALCAR) is involved in transporting fatty acids to mitochondria, where they are transformed into energy. In the context of glutathione, mitochondria need both energy support and antioxidant protection, as they are a major source of free radicals during ATP production. ALCAR can support vitality and mental clarity, especially when the body goes through periods of stress or effort.

May support:
✅ mitochondrial energy production and metabolic efficiency
✅ reducing the sensation of fatigue associated with oxidative stress
✅ supporting physical and mental performance at intense pace
✅ metabolic resilience through "energy + protection" support

 

• Immunity and intestinal barrier: the role of glutamine and vitamin C

The immune system depends on nutrient availability and the balance of natural barriers. L-glutamine is an important amino acid for intestinal cells and immune cells with rapid turnover, and vitamin C is recognized for its role in normal immune system function and protection against oxidative stress. In a formula oriented toward glutathione, these components support the "ground" on which resilience is built.

May contribute to:
✅ supporting normal immune system function
✅ support for barrier integrity (especially at intestinal level)
✅ antioxidant protection during periods with seasonal challenges
✅ better recovery after periods of demand

 

• Methylation and homocysteine balance: the role of TMG (BetaPower® betaine)

Methylation is a central biochemical process for detoxification, neurotransmitter regulation, creatine synthesis, liver metabolism, and many other functions. TMG (trimethylglycine) provides methyl groups, supporting the balance of these processes. In the liver context, methylation is closely connected with the body's ability to process compounds and support regeneration.

May support:
✅ normal functioning of methylation and liver metabolism
✅ balance of biochemical processes involved in detoxification
✅ supporting body resilience to metabolic stress
✅ maintaining a more stable metabolic profile

 

• Complete formula: precursors + Setria® reduced glutathione for targeted support

A major advantage of the product is the "multi-layer" approach: it includes NAC as a strategic precursor, Setria® L-Glutathione reduced as an active form, plus complementary cofactors and antioxidants. This offers broader support than a single-ingredient formula, because glutathione depends on both synthesis and recycling and protection of the cellular environment.

Functional advantages:
✅ chain support: precursor (NAC) + active glutathione (Setria®)
✅ synergistic antioxidants for recycling (Vitamin C, R-ALA)
✅ standardized liver support (milk thistle 80% silymarin)
✅ mitochondrial energy support (acetyl-L-carnitine)
 

 

Directions for Use

As a dietary supplement, take one capsule twice daily with water.




 

Supplement facts
Serving Size: 1 Capsule
	Amount Per Serving	%Daily Value
Vitamin C (as ascorbic acid)	100 mg	111%
BIOSINT™ Acetyl L-Carnitine (from acetyl L-carnitine HCl)	100 mg	*
L-Glutamine	100 mg	*
N-Acetyl-L-Cysteine (NAC)	100 mg	*
Milk Thistle Extract (seeds) (Silybum marianum) (standardized to 80% silymarin by UV)	50 mg	*
TMG (trimethylglycine) (from BetaPower® Natural Betaine)	50 mg	*
R-Fraction Alpha-Lipoic Acid [from Bio-Enhanced® Na-RALA (sodium R-lipoic acid)]	37.5 mg	*
Setria® L-Glutathione Tripeptide (reduced) (glutamic acid, cysteine and glycine)	37.5 mg	*
*Daily Value not established.

 

Other Ingredients

Gelatin capsule (gelatin, copper chlorophyllin and sodium), rice flour, magnesium stearate.

 

Warnings

For adults only. Do not take this product if you are pregnant or nursing. Consult your healthcare provider before using this or any product if you are taking medication or have a medical condition. Discontinue use if gastrointestinal discomfort occurs.
Keep out of reach of children. Do not use if seal is broken. Store in a cool, dry place.