Best glutathione supplement? Liposomal Setria.
The short answer: a liposomal-delivery glutathione made with patented Setria L-Glutathione is the formulation with the strongest clinical evidence for actually raising blood glutathione levels, and timing matters less with liposomal than with the cheaper reduced form. Below are the 7 best glutathione supplements ranked by form, the right dose for most people, the empty-stomach rule (and when you can skip it), and the morning-vs-evening timing question answered by what you're actually trying to accomplish.
🔑 Key Takeaways
- Form is what matters most. Liposomal glutathione absorbs 2-4× better than standard capsules. Spend on delivery technology, not just dose size.
- Look for "Setria" on the label. Setria is the patented Kyowa Hakko form used in most published bioavailability studies. It's the version with the cleanest clinical evidence.
- Empty stomach for reduced glutathione, flexible for liposomal. The cheap capsule forms need 30 to 45 minutes before food. Liposomal can be taken with food.
- Morning vs evening depends on what you're after. Morning for antioxidant defense and skin. Evening for liver detox and sleep repair. Either works, consistency matters more.
- Pair with vitamin C. Vitamin C recycles oxidized glutathione back into its active form, the most evidence-backed cofactor.
Quick Winners: The Best Glutathione Supplement by Category
| Category | Pick | Why |
|---|---|---|
| Best Overall (Liposomal) | Codeage Liposomal Glutathione | Setria L-Glutathione + true phospholipid liposomal complex |
| Best Budget | NOW Foods Glutathione 500mg | $15-20 for a 60-day supply; includes milk thistle + alpha-lipoic acid |
| Best Reduced Form | Jarrow Formulas Glutathione Reduced 500mg | Cleanest single-ingredient label; 120-capsule value |
| Best Sustained-Release | Thorne Glutathione-SR | NSF Certified for Sport; slow-release matrix for steady levels |
| Best Practitioner-Grade | Pure Encapsulations Liposomal Glutathione | Hypoallergenic Setria formula; trusted in clinical practice |
| Best Premium Liposomal | Quicksilver Scientific Liposomal Glutathione | High-quality liposomal technology; preferred by functional medicine |
| Best Stack with NAC | Designs for Health Liposomal Glutathione + NAC | Pairs direct glutathione delivery with the body's main precursor |
The 7 Best Glutathione Supplements, Ranked
1. Codeage Liposomal Glutathione, Best Overall
The single best glutathione supplement for most people in 2026. Codeage uses patented Setria L-Glutathione from Kyowa Hakko, sourced from Japan, the same form used in most of the clinical trials that actually showed measurable increases in blood glutathione levels with oral supplementation. The phospholipid liposomal complex wraps each glutathione molecule in a lipid bilayer that mimics your cell membranes, which dramatically improves how much actually makes it past stomach acid and into circulation.
Dose: 250-500 mg per softgel | Form: Liposomal Setria | Price: ~$35-45 for 30-day supply
Skip if: You're price-sensitive (it costs 3-4× the budget option). The Codeage premium is real bioavailability, not just branding, but if budget is tight, NOW Foods is a reasonable starting point.
2. NOW Foods Glutathione 500mg, Best Budget
NOW Foods has been producing reliable supplements since 1968 and their glutathione formula is the gold-standard budget pick. Each capsule delivers 500 mg of reduced L-glutathione plus 200 mg of milk thistle (standardized to 80% silymarin) and 50 mg of alpha-lipoic acid, both of which support liver function and complement glutathione's role in detoxification.
Dose: 500 mg per capsule | Form: Reduced (with milk thistle + ALA) | Price: ~$15-20 for 60 capsules
Skip if: You have digestive issues or want maximum bioavailability per dollar. Standard capsule absorption is lower than liposomal, so you're trading cost savings for less drug actually reaching cells.
3. Jarrow Formulas Glutathione Reduced 500mg, Best Reduced Form
If you want a pure single-ingredient reduced glutathione without any extras, Jarrow's formula is the benchmark. The label is intentionally minimal: pharmaceutical-grade reduced L-glutathione, a veggie capsule shell, and nothing else. Jarrow operates under strict cGMP standards and submits to third-party testing.
Dose: 500 mg per capsule | Form: Reduced (single-ingredient) | Price: ~$25-30 for 120 capsules
Skip if: You want the best absorption-to-price ratio. The Codeage liposomal formula costs more per capsule but delivers meaningfully more glutathione to your bloodstream.
4. Thorne Glutathione-SR, Best Sustained-Release
Thorne is NSF Certified for Sport, which matters for athletes who get drug-tested. Their Glutathione-SR uses a sustained-release matrix that releases glutathione gradually instead of all at once, keeping blood levels steadier over the day. The formula is hypoallergenic and free of common irritants.
Dose: 175 mg per tablet | Form: Sustained-release reduced glutathione | Price: ~$45-55 for 60 tablets
Skip if: You prefer a single morning or evening dose. The sustained-release format works best when you take 1-2 tablets per day spaced consistently, not when you're forgetful about timing.
5. Pure Encapsulations Liposomal Glutathione, Best Practitioner-Grade
Pure Encapsulations is the brand most commonly recommended by functional medicine doctors. Their liposomal glutathione uses Setria, is hypoallergenic, and has the kind of supply-chain transparency clinicians look for. The formula is gluten-free, soy-free, and free of artificial additives.
Dose: 300 mg per teaspoon (liquid) | Form: Liposomal Setria liquid | Price: ~$60-75 for 1.7 oz bottle (~34 servings)
Skip if: You hate liquid supplements. The liquid format is what enables true liposomal stability, but capsules are easier for travel.
6. Quicksilver Scientific Liposomal Glutathione, Best Premium
Quicksilver pioneered the high-end liposomal delivery space and the formulation reflects it. The phospholipid encapsulation is among the cleanest on the market, with particle sizes optimized for oral absorption. Used heavily in functional medicine for heavy-metal detox and mold-illness protocols.
Dose: 110 mg per pump | Form: Liposomal liquid (high-grade phospholipids) | Price: ~$50-65 for 1.7 oz bottle
Skip if: You want the highest mg-per-dollar. Quicksilver pays for the formulation R&D, not for bulk dosing. For maintenance, Codeage gets you more glutathione per dollar.
7. Designs for Health Liposomal Glutathione, Best for Stacking with NAC
Designs for Health is another practitioner-favorite brand with strong liposomal delivery technology. What sets them apart for stack-builders is that the company also makes a paired NAC supplement designed to be taken alongside, giving you both direct glutathione and the precursor your body uses to make its own.
Dose: 350 mg per teaspoon | Form: Liposomal liquid | Price: ~$55-70 for 5 oz bottle (~30 servings)
Skip if: You don't need the NAC pairing or prefer all-in-one formulas.
How to Pick the Right Form of Glutathione
The four forms of oral glutathione available, ranked by how much actually reaches your bloodstream:
| Form | Bioavailability | Best for | Typical price tier |
|---|---|---|---|
| Liposomal Glutathione | Highest (2-4× standard) | People who want measurable blood-level increases; serious anti-aging or detox use | $$$ to $$$$ |
| S-Acetyl L-Glutathione | High (acetyl group survives stomach acid) | Capsule lovers who want better absorption than reduced form | $$$ |
| Sustained-Release Glutathione | Moderate to high (steady levels) | Athletes, people taking 1-2 tablets daily consistently | $$$ |
| Reduced L-Glutathione (standard) | Lowest (most degraded in stomach) | Budget-conscious buyers, beginners testing whether glutathione helps | $ to $$ |
| NAC (precursor, not glutathione) | N/A (raises glutathione synthesis) | People who want sustained intracellular glutathione production; often cheaper | $ to $$ |
Best Time to Take Glutathione
This is the second most-asked question about glutathione, and the answer depends entirely on what you're trying to accomplish and which form you're using.
Morning vs Evening: What Each Targets
| Time | What it targets | Best for |
|---|---|---|
| Morning (with first water of the day, before breakfast) | Antioxidant defense, immune readiness, skin protection from oxidative stress and UV | Skin/anti-aging users, daily oxidative stress (commute, screen time, training) |
| Evening (45-60 min before bed) | Liver detox cycle, overnight repair, cellular cleanup, sleep quality | Detox protocols, liver support, alcohol recovery, mold illness |
| Post-workout (30-60 min after training) | Quenching exercise-induced oxidative stress without blunting training adaptations | Athletes, heavy lifters, endurance training |
| Split AM + PM | Sustained day-long elevation; biggest total effect | Aggressive protocols for chronic illness or heavy oxidative load |
If you're forced to pick one window, take it in the morning on an empty stomach. The morning dose covers your full day of oxidative challenges and avoids any interference with sleep or other supplements. If your goal is specifically liver detox or you're using glutathione during a recovery period (alcohol, illness, post-procedure), evening makes more sense biologically.
The Empty Stomach Rule (and When You Can Break It)
You'll hear "always take glutathione on an empty stomach" almost everywhere. This is mostly true but the nuance matters.
- Reduced L-glutathione: yes, strict empty stomach. Take 30 to 45 minutes before food, or at least 2 hours after a meal. Glutathione is a tripeptide and the amino acids in food compete with it for the same absorption pathways in your small intestine. Eating with it can cut absorption by more than half.
- Liposomal glutathione: flexible. The phospholipid bilayer protects the molecule from digestive degradation and food doesn't interfere meaningfully. Take it whenever fits your schedule.
- S-Acetyl glutathione: mostly flexible. The acetyl group stabilizes the molecule against stomach acid. Empty stomach is still slightly better for absorption but not critical the way it is for reduced form.
- Sustained-release tablets: with or without food, your call. Consistency at the same time each day matters more than empty stomach.
The single biggest absorption boost: pair with vitamin C.
Vitamin C regenerates oxidized glutathione (GSSG) back into its active reduced form (GSH), effectively recycling it. Taking 500-1000 mg of vitamin C alongside your glutathione dose extends its useful life in the body and produces a synergistic antioxidant effect. This is one of the few stack recommendations with consistent biochemical support.
Glutathione Dosage
| Goal | Dose | Frequency |
|---|---|---|
| General antioxidant maintenance | 250-500 mg | Once daily |
| Skin / anti-aging support | 500 mg | Once daily (morning preferred) |
| Liver support / detox protocol | 500-1,000 mg | Split AM + PM, 4-12 week course |
| Post-exercise recovery | 250-500 mg | 30-60 min after training |
| Heavy metal or mold illness protocols (clinically supervised) | 1,000-2,000 mg | Split AM + PM, with NAC + vitamin C stack |
For most people not in a clinical detox protocol, 500 mg of liposomal glutathione once daily is the sweet spot, enough to produce measurable benefits without overpaying for excess dose. Higher doses don't continue to scale benefits linearly because cellular uptake plateaus once intracellular glutathione is saturated.
Stacking Glutathione
Three stacks consistently produce better outcomes than glutathione alone.
| Stack partner | Why it works | How to dose |
|---|---|---|
| Vitamin C | Recycles oxidized glutathione back to active form; extends useful life of each dose | 500-1,000 mg with glutathione |
| NAC (N-Acetyl Cysteine) | Precursor your body uses to synthesize its own glutathione, supports intracellular production | 600-1,200 mg daily, separately from glutathione (e.g. NAC in morning, glutathione at night) |
| Alpha-Lipoic Acid (ALA) | Recycles glutathione and other antioxidants; complementary mitochondrial support | 300-600 mg daily with glutathione |
| Selenium | Cofactor for glutathione peroxidase enzyme; required for glutathione to function as antioxidant | 100-200 mcg daily (food sources often sufficient) |
| Milk Thistle (Silymarin) | Supports liver glutathione synthesis and protects hepatocytes | 200-400 mg daily during detox protocols |
For most people, the simplest effective stack is glutathione (liposomal, 500 mg AM) + vitamin C (500 mg with it) + NAC (600 mg PM). That covers direct supplementation, recycling, and precursor support in one routine.
Glutathione Side Effects
Oral glutathione is exceptionally well tolerated. The rare side effects worth knowing:
- Mild GI discomfort. A small number of users report bloating, gas, or loose stools, usually with higher doses or specific formulations. Switch forms or lower dose.
- Allergic reactions. Rare but possible with any supplement. Stop and seek care if you experience hives, swelling, or breathing changes.
- Lower zinc levels with chronic high doses. Long-term use of 1,000+ mg daily may modestly lower zinc absorption. Periodic zinc supplementation or food sources address this.
- Reduced asthma medication effectiveness in some users. If you use inhaled corticosteroids, talk to your pulmonologist before starting glutathione, there's a theoretical interaction.
- Sulfur smell or taste. Liposomal liquid formulations sometimes have a sulfurous taste from the cysteine residue. Doesn't indicate a quality problem; mix with juice or water if it bothers you.
Who Should Skip Oral Glutathione
- Anyone with a known cysteine or sulfur allergy
- People on certain chemotherapy regimens (talk to oncologist; glutathione can interfere with some drugs that work through oxidative stress)
- Anyone scheduled for medical imaging that requires oxidative contrast (pause for a week prior)
- Pregnant or breastfeeding women without prescriber approval
- People taking nitroglycerin or other nitrate medications (theoretical interaction, ask cardiologist)
Frequently Asked Questions
Medical disclaimer: This article is for educational and informational purposes only and is not medical advice. Glutathione supplements are widely available over the counter and have a strong general safety record, but talk to a qualified healthcare provider before starting if you have a chronic illness, are pregnant or breastfeeding, take prescription medications, or are scheduled for any medical procedure. Brand recommendations are based on third-party testing data, formulation quality, and clinical evidence as of publication date; brands can change formulations without notice.