How to Raise Glutathione Levels Naturally: 7 Evidence-Based Methods
Learn how to raise glutathione-your body's master antioxidant-using NAC, glycine, selenium, whey protein, and lifestyle strategies. Optimize detoxification, immune function, and longevity.
- Published
- January 28, 2026
- Last updated
- September 30, 2026
- Read time
- 16 min read
Quick Summary
Learn how to raise glutathione-your body’s master antioxidant-using NAC, glycine, selenium, whey protein, and lifestyle strategies. Optimize detoxification, immune function, and longevity.
You’re aging faster than you should. Your skin shows signs of oxidative stress, your liver enzymes are creeping up, and you’re constantly battling inflammation. Recovery from workouts takes twice as long, and brain fog is becoming your new normal.
Your body’s detoxification system is struggling.
The science is clear: glutathione (GSH) is your body’s master antioxidant-produced in every cell, it protects against oxidative stress, neutralizes toxins, supports immune function, and regulates inflammation. Low glutathione is linked to accelerated aging, chronic disease, neurodegenerative conditions, and impaired detoxification.
What most people don’t realize is that optimal glutathione levels are associated with longevity, resilience, and cellular health. Unlike other antioxidants you consume (vitamin C, E), glutathione must be produced inside your cells from three amino acids: cysteine, glycine, and glutamate.
The key? Providing your body with the right building blocks, supporting the enzymes that synthesize glutathione, and reducing oxidative stress that depletes it. Let’s break down the 7 most effective methods-data-driven insights for optimize from within.
What Is Glutathione?
Glutathione (GSH) is a tripeptide molecule made from three amino acids:
-
Cysteine (rate-limiting amino acid-contains sulfur)
-
Glycine
-
Glutamate
It exists in two forms:
-
Reduced glutathione (GSH): Active form, the antioxidant
-
Oxidized glutathione (GSSG): Inactive form, created when GSH neutralizes free radicals
The GSH:GSSG ratio is a critical marker of oxidative stress. Healthy cells maintain a ratio of 100:1 or higher (99% GSH, <1% GSSG). When this ratio drops, cells are under oxidative stress [1].
Functions of glutathione:
-
Master antioxidant: Neutralizes free radicals (superoxide, hydrogen peroxide, hydroxyl radicals)
-
Detoxification: Binds heavy metals (mercury, lead), pesticides, environmental toxins-conjugates them for excretion
-
Immune function: Supports T-cell proliferation, NK cell activity, antibody production
-
Mitochondrial health: Protects mitochondria from oxidative damage, supports ATP production
-
Protein synthesis: Regulates DNA synthesis, protein folding
-
Anti-aging: Protects telomeres, reduces cellular senescence
Optimal glutathione levels:
-
Whole blood GSH: 800-1,200 umol/L
-
RBC glutathione: 1,500-2,500 umol/L (intracellular levels)
-
GSH:GSSG ratio: >100:1
The reality is that glutathione declines with age-by age 60, levels can be 30-50% lower than in youth. This decline accelerates oxidative stress, inflammation, and disease risk [2].
Why Are Your Glutathione Levels Low?
Root causes of glutathione deficiency:
1. Aging (Reduced Synthesis Capacity)
As you age, production of glutathione declines due to:
-
Reduced activity of gamma-glutamylcysteine ligase (GCL), the rate-limiting enzyme in glutathione synthesis
-
Decreased cellular energy (ATP) to fuel glutathione recycling
-
Lower levels of precursor amino acids (especially cysteine and glycine)
Studies show glutathione levels drop 10-15% per decade after age 40 [3].
2. Chronic Oxidative Stress (Depletes Glutathione Faster Than It’s Made)
Anything that increases free radical production depletes glutathione:
-
Chronic inflammation (autoimmune diseases, obesity, metabolic syndrome)
-
Environmental toxins (air pollution, pesticides, heavy metals)
-
Alcohol consumption (glutathione is rapidly depleted in liver detoxification)
-
Poor diet (high in processed foods, seed oils, sugar)
-
Intense exercise (without adequate recovery)
When oxidative stress exceeds your body’s capacity to recycle GSSG back to GSH, levels drop [4].
3. Nutrient Deficiencies (Building Blocks Missing)
Glutathione synthesis requires specific nutrients:
-
Cysteine: From dietary protein (whey, eggs, poultry)-rate-limiting
-
Glycine: Often deficient in modern diets (need 10-15g/day, most get 3-5g)
-
Selenium: Cofactor for glutathione peroxidase (GPx), the enzyme that recycles GSSG back to GSH
-
B vitamins (B6, B9, B12): Required for methylation and sulfur metabolism
-
Vitamin C: Recycles oxidized glutathione
Deficiency in any of these impairs glutathione production or recycling [5].
4. Liver Dysfunction (Primary Glutathione Production Site)
The liver produces 80-90% of your body’s glutathione. Conditions that impair liver function reduce glutathione:
-
Non-alcoholic fatty liver disease (NAFLD)
-
Alcohol-related liver disease
-
Hepatitis
-
Medication-induced liver stress (acetaminophen, statins)
5. Genetic Variations (GSTM1, GSTP1 Polymorphisms)
Polymorphisms in genes encoding glutathione S-transferases (GSTs) can reduce detoxification capacity and glutathione efficiency by 20-40%. Common variants include:
-
GSTM1 null: 40-50% of population-reduced capacity to neutralize environmental toxins
-
GSTP1 variants: Impaired detoxification of carcinogens
6. Acetaminophen (Tylenol) and Medication Use
Acetaminophen (paracetamol) is detoxified by glutathione conjugation. High doses (>4g/day) or chronic use rapidly deplete liver glutathione, increasing risk of liver damage. Other medications that deplete glutathione: chemotherapy, NSAIDs, certain antibiotics [6].
1. N-Acetylcysteine (NAC) Supplementation (Cysteine Precursor)
Why it works:
NAC is a more stable delivery form of cysteine, the rate-limiting amino acid in glutathione
synthesis. Very little intact NAC actually reaches the bloodstream: the pharmacology review cited
here puts oral bioavailability at roughly 4 to 10 percent, and makes the point that any antioxidant
effect depends on what the cell converts into glutathione rather than on NAC itself [7].
How to implement:
Amounts used in studies:
-
Oral trials generally used 600-1,800 mg daily, split into two or three doses
-
Higher amounts appear only in studies run under medical supervision, and are not a self-directed option
-
Intravenous acetylcysteine for acetaminophen poisoning is a hospital medication given by clinicians in an emergency. It is a different product and a different use from an oral supplement [6]
Timing:
-
Morning on empty stomach (better absorption)
-
Or with meals (if causes GI upset)
-
Split doses: 600 mg 2-3× daily
Forms:
-
Regular NAC: Most common, effective
-
Sustained-release NAC: Longer-lasting blood levels
-
Liposomal NAC: Enhanced cellular uptake
Evidence:
The human data come mostly from specific clinical populations rather than from healthy adults taking
a supplement. In an 8-week controlled trial in people with HIV infection, whose glutathione was
depleted at baseline, oral NAC raised whole blood glutathione from 0.88 to 0.98 mM, reaching about
89% of the level measured in uninfected controls [9]. Reviews of NAC in neurodegenerative
conditions describe it as a glutathione precursor under investigation, not an established treatment
[8].
Side effects:
-
Nausea (take with food if occurs)
-
Sulfur smell (normal)
-
Rare: rash, wheezing (discontinue if allergic)
Expected timeline:
The trial above measured its glutathione change over 8 weeks. Trials have not established a timeline
for changes in how you feel.
2. Glycine Supplementation (Often Deficient, Critical for Glutathione Synthesis)
Why it works:
Glycine is the second building block of glutathione. While cysteine is rate-limiting, glycine is
often functionally deficient in modern diets. You need 10-15 grams daily for optimal glutathione
production, but most people consume only 3-5 grams. In people with low glycine intake, adding
glycine has been reported to raise glutathione synthesis [10].
How to implement:
Dosing:
-
General health: 5-10 grams daily
-
Glutathione optimization: 10-15 grams daily (divided doses)
-
Aging/longevity: 15 grams daily (research shows benefits for lifespan)
Forms:
-
Glycine powder: Tasteless, mixes in water/coffee/smoothies
-
Collagen peptides: 10-20 grams daily (33% glycine by weight = ~3-7g glycine)
-
Bone broth: Rich source (8-10g glycine per cup)
Timing:
-
With meals (supports protein synthesis)
-
Before bed: 3-5 grams (improves sleep quality via NMDA receptor modulation)
Synergy with NAC:
-
Combine NAC (600 mg 2× daily) + Glycine (5g 2× daily) for maximum glutathione boost
-
Research shows this combination increases glutathione more than either alone [11]
Evidence:
A study in older adults found that glycine supplementation (15g daily) increased glutathione by 25%
and reduced oxidative stress markers by 30% within 2 weeks [12]. Another trial showed glycine +
NAC (GlyNAC) restored glutathione to youthful levels in aging participants [13].
Additional benefits:
-
Improves sleep quality (3-5g before bed)
-
Supports collagen synthesis (skin, joints, tendons)
-
Reduces inflammation (inhibits NF-κB signaling)
3. Whey Protein (Rich in Cysteine and Glutamylcysteine)
Why it works:
Whey protein is uniquely high in cysteine and contains gamma-glutamylcysteine, a direct
precursor to glutathione. Unlike isolated amino acids, whey delivers these in bioactive peptides
that enhance glutathione synthesis. Trials reveal whey protein raises glutathione by 25-35% [14].
How to implement:
Dosing:
-
20-40 grams daily (post-workout or as snack)
-
Choose undenatured whey (cold-processed, preserves bioactive peptides)
-
Whey protein isolate (higher protein content, lower lactose)
Best sources:
-
Grass-fed whey isolate: Highest cysteine content
-
Undenatured whey concentrate: Preserves immunoglobulins and glutathione precursors
-
Avoid heat-treated: Heat denatures cysteine
Timing:
-
Post-workout (supports muscle recovery + glutathione synthesis)
-
Morning (with breakfast)
For vegans:
-
Pea protein isolate: Lower in cysteine but can be paired with NAC
-
Hemp protein: Moderate cysteine content
Evidence:
A randomized trial found that 20 grams of whey protein daily for 3 months increased lymphocyte
glutathione by 35% and improved immune markers in HIV patients [15]. Another study in older adults
showed whey protein (40g daily) raised glutathione by 24% and reduced oxidative stress [16].
Expected timeline:
Increased glutathione within 1-2 weeks; sustained benefits with consistent use.
4. Selenium Supplementation (Critical for Glutathione Recycling)
Why it works:
Selenium is a cofactor for glutathione peroxidase (GPx), the enzyme that uses glutathione to
neutralize hydrogen peroxide and recycles oxidized GSSG back to reduced GSH. Without adequate
selenium, glutathione becomes “trapped” in its oxidized form, reducing antioxidant capacity [17].
How to implement:
Dosing:
-
200 mcg daily (optimal for glutathione peroxidase activity)
-
Form: Selenomethionine or selenium-enriched yeast (better absorbed than sodium selenite)
Food sources:
-
Brazil nuts: 2-3 nuts daily (each contains 70-90 mcg selenium)
-
Wild-caught fish: Tuna, halibut, sardines
-
Grass-fed beef, organ meats
-
Eggs: 15-20 mcg per egg
Caution:
-
Don’t exceed 400 mcg daily long-term (risk of selenosis: hair loss, nail brittleness, GI upset)
-
Test selenium levels if supplementing >200 mcg daily
Evidence:
A study found that selenium supplementation (200 mcg daily) increased glutathione peroxidase
activity by 40% and raised glutathione levels by 18% within 3 months [18]. Another trial in cancer
patients showed selenium restored glutathione to near-normal levels during chemotherapy [19].
Expected timeline:
Increased GPx activity within 2-4 weeks; measurable glutathione improvements within 6-8 weeks.
5. Reduce Oxidative Stress (Preserve Existing Glutathione)
Why it works:
If you’re constantly depleting glutathione faster than you’re making it, supplementation alone won’t
solve the problem. Reducing oxidative stress lowers glutathione turnover, allowing levels to rise
[20].
How to implement:
Dietary strategies:
-
Eliminate seed oils: Soybean, corn, canola oils (high in oxidized omega-6)-replace with olive oil, avocado oil, coconut oil
-
Reduce processed foods: High in advanced glycation end products (AGEs), trans fats
-
Increase antioxidant-rich foods:
-
Cruciferous vegetables: Broccoli, kale, Brussels sprouts (contain sulforaphane, which induces glutathione synthesis)
-
Berries: Blueberries, blackberries (anthocyanins spare glutathione)
-
Green tea: EGCG (enhances glutathione peroxidase activity)
-
Turmeric: Curcumin (induces glutathione synthesis via Nrf2 pathway)
Reduce toxin exposure:
-
Water: Filter tap water (remove chlorine, heavy metals, pesticides)
-
Air quality: Use HEPA filters (reduce particulate matter, VOCs)
-
Personal care: Choose paraben-free, phthalate-free products
-
Cookware: Avoid non-stick (PFAS/PFOA exposure)-use stainless steel, cast iron, ceramic
Limit alcohol:
-
Alcohol rapidly depletes liver glutathione (even moderate drinking reduces GSH by 20-30%)
-
If you drink, take NAC (600 mg) before/after to mitigate glutathione depletion
Manage blood sugar:
-
High glucose increases oxidative stress and depletes glutathione
-
Target fasting glucose <90 mg/dL, HbA1c <5.5%
-
Reduce refined carbs, eat protein + fat with meals
Evidence:
A study found that switching from seed oils to olive oil increased glutathione by 12% within 8 weeks
[21]. Another trial showed that reducing processed food intake raised glutathione by 15% and
lowered oxidative stress markers [22].

Photo from Unsplash
6. Support Liver Health (Primary Glutathione Production Site)
Why it works:
The liver produces 80-90% of your body’s glutathione and is the primary detoxification organ.
Supporting liver function enhances glutathione synthesis and recycling [23].
How to implement:
Liver-supportive supplements:
-
Milk thistle (silymarin): studied at 300-600 mg daily; silymarin has been associated with liver-cell protection and modest support for glutathione
-
Alpha-lipoic acid (ALA): 300-600 mg daily (recycles glutathione, protects mitochondria)
-
Vitamin E: 200-400 IU mixed tocopherols (protects liver from oxidative stress)
-
B vitamins: B6, B9 (folate), B12 (support methylation and sulfur metabolism)
Lifestyle interventions:
-
Limit alcohol: <1 drink/day for women, <2 for men (ideally none if optimizing glutathione)
-
Avoid acetaminophen overuse: <3,000 mg daily total (depletes liver glutathione)
-
Intermittent fasting: 16:8 or 18:6 (enhances autophagy, liver detoxification, glutathione recycling)
-
Exercise: 30-60 min moderate intensity 5× week (improves liver function, increases glutathione)
Coffee (surprising benefit):
-
2-3 cups daily (caffeinated) increases glutathione S-transferase activity by 20-30%
-
Chlorogenic acids in coffee induce Nrf2 pathway - glutathione synthesis [24]
Evidence:
A trial in NAFLD patients found that milk thistle (600 mg daily) + NAC (1,200 mg) increased liver
glutathione by 45% and improved liver enzymes (ALT, AST) by 25% within 3 months [25].
7. Sulforaphane from Cruciferous Vegetables (Induces Glutathione Synthesis)
Why it works:
Sulforaphane activates the Nrf2 pathway, a master regulator of antioxidant enzymes. Nrf2
activation increases expression of genes that produce glutathione synthesis enzymes (GCL,
glutathione reductase). This doesn’t just provide building blocks-it upregulates your body’s
glutathione production machinery [26].
How to implement:
Food sources:
-
Broccoli sprouts: Highest concentration (50-100× more sulforaphane than mature broccoli)
-
Broccoli: 1-2 cups daily (lightly steamed, not overcooked)
-
Brussels sprouts, cabbage, kale, cauliflower: Rich in glucosinolates (convert to sulforaphane)
Preparation:
-
Lightly steam (3-4 minutes)-preserves myrosinase enzyme needed to convert glucoraphanin to sulforaphane
-
Add mustard powder (1/4 tsp per serving)-provides myrosinase if cooking deactivated it
-
Raw broccoli sprouts: Highest bioavailability
Supplementation:
-
Sulforaphane extract: 30-60 mg daily (standardized to myrosinase-activated glucoraphanin)
-
Broccoli sprout powder: 1-2 tablespoons daily
Dosing:
- For glutathione optimization: 30-60 mg sulforaphane daily OR 1/2 cup broccoli sprouts
Evidence:
A study found that broccoli sprout extract (30 mg sulforaphane daily) increased glutathione by 30%
and reduced oxidative stress markers by 40% within 4 weeks [27]. Another trial showed that
sulforaphane upregulated glutathione synthesis enzymes by 50-80% [28].
Expected timeline:
Increased glutathione within 2-4 weeks; sustained benefits with daily intake.
Testing Protocols - When and What to Measure
Baseline testing (before starting interventions):
-
Glutathione (whole blood or RBC): Measures intracellular GSH
-
GSSG (oxidized glutathione): Measures oxidative stress
-
GSH:GSSG ratio: Should be >100:1 (healthy cells)
-
Glutathione peroxidase (GPx) activity: Enzyme function (selenium-dependent)
-
Oxidative stress markers: 8-OHdG (DNA damage), MDA (lipid peroxidation)
-
Selenium: Serum or RBC selenium
-
Liver enzymes: ALT, AST, GGT (assess liver function)
-
hsCRP: Systemic inflammation
Follow-up testing:
-
4-6 weeks: Retest glutathione, GSH:GSSG ratio (assess early response)
-
12 weeks: Full panel (assess optimization)
-
6 months: Maintenance testing
Optimal targets:
-
Whole blood GSH: 800-1,200 umol/L
-
RBC glutathione: 1,500-2,500 umol/L
-
GSH:GSSG ratio: >100:1 (>99% reduced form)
-
Glutathione peroxidase: 27-93 U/g Hb
-
8-OHdG: <5 ng/mL (DNA oxidation)
Maximum Glutathione Boost (Starting from Deficient Levels)
Aim: rebuild glutathione from a deficient baseline, using amounts studied for each component below
-
NAC: 1,200-1,800 mg daily (600 mg 2-3× daily)
-
Glycine: 10-15 grams daily (5g 2-3× daily)
-
Whey protein: 20-40 grams daily (grass-fed isolate)
-
Selenium: 200 mcg daily (or 2-3 Brazil nuts)
-
Sulforaphane: 30-60 mg daily (broccoli sprouts or extract)
-
Milk thistle: 300-600 mg daily
-
Alpha-lipoic acid: 300-600 mg daily
-
Reduce oxidative stress: Eliminate seed oils, limit alcohol, filter water
-
Support liver: Intermittent fasting 16:8, coffee 2× daily
Retest: 8-12 weeks
Reported increases vary by component and study, and a combined stack has not been shown to deliver a fixed percentage.
Longevity and Anti-Aging Protocol
Goal: Maintain high glutathione, reduce oxidative stress, slow aging
-
GlyNAC: NAC (600 mg 2× daily) + glycine (5g 2× daily), the combination pilot-tested in older adults [29]
-
Whey protein: 20 grams daily
-
Selenium: 200 mcg daily
-
Sulforaphane: 30 mg daily (broccoli sprouts 3-4× week)
-
Antioxidant-rich diet: Berries, green tea, cruciferous vegetables
-
Exercise: 30-60 min moderate intensity 5× week
-
Sleep: 7-9 hours, consistent schedule
Maintenance: Long-term
Evidence: In a small pilot trial in older adults, GlyNAC supplementation increased glutathione by 90%, reduced oxidative stress by 36%, and improved physical function and cognitive scores [29]. It was uncontrolled and has not been replicated at scale.
Liver Support and Detoxification
Goal: Optimize liver glutathione for detoxification, protect from toxins
-
NAC: 1,800 mg daily (600 mg 3× daily)
-
Glycine: 10 grams daily
-
Milk thistle: 600 mg daily
-
Alpha-lipoic acid: 600 mg daily
-
Selenium: 200 mcg daily
-
Vitamin E: 400 IU mixed tocopherols
-
B-complex: High-potency (B6, B9, B12)
-
Eliminate alcohol: Minimum 3 months
-
Intermittent fasting: 16:8 or 18:6
-
Coffee: 2-3 cups daily (enhances detox enzymes)
Retest liver enzymes: 8-12 weeks
Athletic Performance and Recovery
Goal: Reduce exercise-induced oxidative stress, improve recovery
-
NAC: 1,200 mg daily (600 mg 2× daily)
-
Glycine: 10 grams daily (5g post-workout, 5g before bed)
-
Whey protein: 30-40 grams post-workout
-
Vitamin C: 1,000 mg daily (recycles glutathione)
-
Vitamin E: 200 IU mixed tocopherols
-
Tart cherry juice: 8 oz daily (reduces inflammation, spares glutathione)
-
Sleep: 8-9 hours (recovery critical)
Expected benefits: Faster recovery, reduced muscle soreness, improved performance
What to Expect, and When to Retest
Track glutathione itself, because that is what the trials measured and what you can actually verify. The schedule below is built around the retest.
Weeks 1-2:
- The shortest trial cited here measured a change this early: older adults given cysteine and glycine for two weeks had glutathione synthesis and concentrations restored toward the levels seen in younger adults [3].
Weeks 4-8:
- The HIV trial cited earlier measured a rise of roughly 11% in whole blood glutathione over 8 weeks in people who started depleted [9], and the GlyNAC pilots in older adults reported larger increases over a longer run [29].
Weeks 8-12:
- Retest glutathione and the GSH:GSSG ratio against your baseline. That comparison, not a week-by-week read on how you feel, is what tells you whether the amounts you chose are doing anything.
Months 3-6:
- If the ratio is holding above 100:1, retest every 6 months. If it has not moved, the limiting factor is more likely intake, absorption, or ongoing oxidative stress than the amount taken.
Aging (>60 years)
-
GlyNAC: NAC (600 mg 2× daily) + glycine (5g 2× daily), the combination used in pilot trials that raised glutathione in older adults toward the levels measured in younger adults [29]
-
Whey protein: 20-30 grams daily
-
Selenium: 200 mcg daily
-
Expected results: Increased muscle strength, cognitive function, reduced frailty
Chronic illness (autoimmune, cancer, HIV)
Glutathione depletion is common in chronic inflammatory and immune conditions, and NAC, intravenous glutathione, and higher protein intake are sometimes used as part of care. In these settings the dose and route belong with the treating clinician rather than a self-directed protocol, because they depend on the diagnosis, other treatments, and monitoring.
Athletes
-
NAC: 1,200 mg daily (reduces exercise-induced oxidative stress)
-
Glycine: 10 grams daily (supports recovery)
-
Whey protein: 30-40 grams post-workout
-
Expected results: Faster recovery, reduced muscle damage, improved performance
The Bottom Line
Glutathione is your body’s master antioxidant, and supporting it may help with detoxification, immune function, and cellular resilience. Low glutathione has been associated with aging, oxidative stress, and a range of chronic diseases, though much of that evidence is observational and raising glutathione has not been shown to prevent those diseases.
The building blocks with the most human evidence are NAC and glycine (the amino-acid precursors), whey protein, selenium (a cofactor for glutathione recycling), and sulforaphane from cruciferous vegetables; the amounts used in studies are described above. Reducing oxidative stress and supporting liver function help preserve what you make. In pilot trials in older adults, the GlyNAC combination (glycine plus NAC) taken over several months raised glutathione toward the levels seen in younger people.
Test This with Mito
Glutathione itself is not commonly measured in routine blood panels. The most actionable approach is tracking the downstream markers that respond to glutathione status: oxidative stress markers, liver enzymes, methylation markers, and inflammation. Mito Health offers several testing options with physician-guided interpretation:
- Mito Core Panel: 100+ biomarkers including ALT, AST, GGT (liver enzymes), homocysteine (methylation), hsCRP (inflammation), and the nutrient cofactors (selenium, B vitamins) that drive glutathione synthesis. See current per-test and panel pricing in the blood test price comparison.
- Build Your Own panel: select liver enzymes, homocysteine, and hsCRP à la carte to track glutathione-supportive intervention response. Pricing starts at $40 per marker.
- How Mito testing works: walks through sample collection, turnaround, and how the physician-guided interpretation report is delivered.
How to decide which panel fits your situation:
- Starting a NAC, glycine, or GlyNAC protocol with no recent labs: Mito Core Panel. Glutathione status is most readable when liver enzymes, methylation markers, and inflammation are interpreted together.
- Tracking response 8 to 12 weeks into a protocol: Build Your Own with ALT, AST, GGT, hsCRP, and homocysteine to confirm the protocol is moving downstream markers in the right direction.
- Suspecting oxidative stress as a driver of fatigue or aging: Mito Core Panel first to identify which specific pathway (methylation, mitochondrial, inflammation) is most affected.
Key Takeaways
Glutathione is your master antioxidant: Central to detoxification and immune function, and it
declines with age
Optimal levels are >5 umol/L with GSH:GSSG ratio >100:1, not just detectable
NAC and glycine are the precursors with the most human data, at the study amounts described
above
Measure baseline: Glutathione, GSH:GSSG ratio, oxidative stress markers (8-OHdG, MDA)
Dietary support matters: Cruciferous vegetables (sulforaphane), whey protein, selenium
Avoid oxidative stressors: Eliminate seed oils, reduce chronic stress, support sleep
Trials measured glutathione anywhere from 2 weeks to several months in, so compare against your
own baseline
Retest every 8-12 weeks until optimal, then every 6 months for maintenance
Medical Disclaimer
This article is for educational and informational purposes only and does not constitute medical advice. The information provided should not be used for diagnosing or treating a health condition. Always consult with your doctor or qualified healthcare provider before starting any new supplement protocol, making changes to your diet, or if you have questions about a medical condition.
Individual results may vary. The dosages and protocols discussed are evidence-based but should be personalized under medical supervision, especially if you have existing health conditions or take medications.
Track Your Progress
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