The best antioxidant glutathione supplements combine a clearly labeled dose (most research uses 250 to 1,000 mg a day), a form that fits your budget, independent testing, and a short ingredient list. Beneve Glutathione + suits you if you want hormone support alongside antioxidant support. Nutricost and Toniiq suit you if you want a high dose at the lowest cost. Thorne suits athletes who need NSF Certified for Sport, Rho suits you if you prefer a liquid liposomal, and Jarrow suits you if you want to try S-acetyl.

Shopping for glutathione is confusing for a reason. One bottle lists 100 mg and the next lists 1,000 mg. The labels say reduced, liposomal, sustained-release, or S-acetyl as if the differences were settled, and they are not. The research on oral glutathione is real but modest, so a premium form only makes sense when you know what you are paying for.

This guide gives you seven picks, each described the same way: what is in it, who it suits, and where it falls short. After the picks you get a cost comparison, a plain explanation of the forms, and a summary of benefits, dosage, and side effects. Beneve makes the first pick, so we hold it to the same standard as the others. We compared labels and published studies rather than running our own lab tests.

1. Beneve Glutathione +

Beneve Glutathione + is the pick if you want glutathione plus hormone-support ingredients in one daily supplement. Beneve describes it as an antioxidant blend of glutathione, DIM, and xanthohumol for cellular health, hormone balance, and overall wellness. It is a blend, not a glutathione-only bottle, so you judge it differently from the single-ingredient picks below.

What’s in it

The formula combines three ingredients with different jobs. Glutathione is the antioxidant your cells make from cysteine, glutamate, and glycine. DIM and xanthohumol are the add-ons that set this product apart from a standard capsule.

• Glutathione: the core antioxidant tripeptide.
• DIM (diindolylmethane): a compound formed when you digest cruciferous vegetables such as broccoli, and a common ingredient in hormone-support formulas.
• Xanthohumol: a flavonoid from hops that is studied for its antioxidant activity.
• Price: $65, with subscribe and save taking $7 off.

Who it suits and what to watch

This pick suits adults who want one product for antioxidant and hormone-related goals instead of stacking three separate supplements. If your only aim is the most glutathione for the least money, a single-ingredient bottle will beat it.

Check the glutathione amount per serving on the product page before you compare it with the milligram figures in the table later in this article. A blend will not map neatly onto a 500 mg or 1,000 mg bottle. DIM and xanthohumol are included for hormone support, so talk to your clinician first if you are pregnant, breastfeeding, taking hormone therapy, or managing a hormone-sensitive condition.

A blend earns its price only if you want the extra ingredients, not because it delivers more glutathione.

2. Toniiq Glutathione 98%

Toniiq Glutathione 98% is the high-dose, single-ingredient pick for shoppers who want published testing and nothing else in the capsule. It delivers 1,000 mg of reduced glutathione per two-capsule serving at a low price.

What’s in it

The formula is reduced glutathione in vegetable capsules with no added herbs or vitamins. The “98%” describes the purity of the raw material, not how much your body absorbs.

• Dose: 1,000 mg per serving, two capsules daily, preferably on an empty stomach.
• Count: 60 capsules, a 30-day supply.
• Testing: third-party lab tested, GMP certified, and tested for heavy metals and microbes, with a certificate of analysis linked on the product page.
• Price: $20.97 as listed, about $0.70 a day.

Who it suits and what to watch

Toniiq suits you if you already get vitamin C and other antioxidants elsewhere and want a clean, transparent single ingredient. It also suits you if you want to see the testing documentation before you buy.

The trade-off is that more milligrams do not guarantee more effect. A four-week randomized trial using 500 mg twice daily, the same 1,000 mg a day, found no significant change in the glutathione markers it measured. Duration, baseline levels, and individual response all matter. Two capsules a day is also a bigger routine than a one-capsule product.

A 98% purity claim describes the ingredient, not how much of it reaches your bloodstream.

3. VitaUp Glutathione with milk thistle and vitamin C

VitaUp is the all-in-one capsule pick for readers who want glutathione bundled with milk thistle and vitamin C. It is the most complete single-bottle formula among the capsule options here.

What’s in it

Each two-capsule serving is a reduced glutathione base with two complementary ingredients. Milk thistle is standardized to 80% silymarin, and vitamin C supports the antioxidant network.

• Glutathione: 1,000 mg of reduced L-glutathione per serving.
• Milk thistle extract: 200 mg (80% silymarin).
• Vitamin C: 100 mg.
• Count and price: 60 capsules, a 30-day supply, listed at $26.99, about $0.90 a day.
• Quality: made in the USA, third-party tested, and produced in an FDA-registered, GMP-certified facility.

Who it suits and what to watch

VitaUp suits you if you want a liver-wellness angle and a simple routine: two capsules daily before a meal with a full glass of water. It costs only a few dollars more per month than Toniiq.

Treat the extras as complements, not proof of better absorption. No trial has shown this finished formula outperforms plain glutathione. If you already take a milk thistle or vitamin C supplement, you may be doubling up, so add up the totals first.

Milk thistle and vitamin C are sensible companions, but they are not evidence that this capsule works better than plain glutathione.

4. Nutricost Glutathione 500 mg

Nutricost Glutathione is the lowest cost per day among the picks, with 500 mg of reduced glutathione per serving and a 240-capsule bottle. If you plan to take glutathione for months, this is the budget pick.

What’s in it

This is a plain reduced glutathione capsule at a dose most supplements and many studies sit around.

• Dose: 500 mg per serving, one capsule.
• Count: 240 capsules.
• Quality: third-party tested, cGMP certified, non-GMO, and gluten-free.
• Price: $43.97 as listed, about $0.18 a day, or roughly $5.50 per 30 days.

Who it suits and what to watch

Nutricost suits you if you want a mid-range dose without a monthly bill and you do not need extras. The 500 mg dose also leaves room to adjust up or down once you see how you tolerate it.

The trade-offs are practical. The capsule is a conventional one, with no liposomal or S-acetyl delivery. It also reportedly uses a gelatin capsule, so vegans should read the label. Finally, 240 capsules is a large commitment if you are still deciding whether glutathione works for you.

If you just want a standard, tested 500 mg capsule for the lowest price, this is the one to start with.

5. Thorne Glutathione-SR

Thorne Glutathione-SR is the sustained-release pick for athletes and for anyone who prioritizes a professional brand and sport certification over the lowest price. It uses a time-release matrix instead of competing on milligrams.

What’s in it

Each capsule holds a modest dose that releases gradually. The label directs one capsule two to three times a day.

• Dose: 175 mg of reduced glutathione per capsule, so 350 to 525 mg daily.
• Delivery: a Time-Sorb matrix designed to release the ingredient gradually.
• Certification: NSF Certified for Sport, and gluten-free.
• Count and price: 60 capsules, listed at $54, which lasts 20 to 30 days.

Who it suits and what to watch

Thorne suits drug-tested athletes, because the NSF Certified for Sport mark screens for substances banned in competition. It also suits you if you trust the brand and are willing to pay for it.

The cost is the catch. At two to three capsules a day you spend about $54 to $81 per 30 days, far more than the capsule picks above. Sustained release is designed to protect glutathione from stomach acid and enzymes, but direct head-to-head human evidence against other forms is limited, so it should not be called more bioavailable by default.

Pay for Thorne because of the sport certification and the brand, not because time-release is proven to absorb better.

6. Rho Nutrition Liposomal Glutathione

Rho Nutrition is the liquid liposomal pick for readers who dislike swallowing capsules or want to try lipid-based delivery. It supplies 500 mg of glutathione in a 4 mL daily serving.

What’s in it

The glutathione is wrapped in sunflower lecithin, a lipid shell meant to protect it through digestion. The liquid is sweetened and flavored.

• Dose: 500 mg per 4 mL serving, just under a teaspoon.
• Count: 30 servings, a 120 mL bottle.
• Other ingredients: purified water, glycerin, monk fruit juice, natural flavors, citric acid, sunflower lecithin, and potassium sorbate.
• Quality: third-party tested, soy-free, dairy-free, gluten-free, and nut-free.
• Price: $52.95 as listed, about $1.77 a day.

Who it suits and what to watch

Rho suits you if you want a liquid you can stir into a drink and you are curious about liposomal delivery. The format also helps if you are tired of taking several pills each morning.

You pay roughly ten times Nutricost’s daily cost for the same 500 mg label dose. Some early studies favor liposomal glutathione, but independent head-to-head trials against plain capsules remain limited. Weigh the convenience and the unproven absorption edge honestly before you pay the premium.

Liposomal delivery is a promising design, not a proven upgrade, so buy it for convenience first.

7. Jarrow Formulas S-Acetyl L-Glutathione

Jarrow Formulas S-Acetyl L-Glutathione is the S-acetyl pick for readers who want a different molecule rather than a bigger dose. It is a small once-daily tablet.

What’s in it

S-acetyl glutathione has an acetyl group attached to its sulfur atom. That change is designed to make it more stable and let it convert back to glutathione inside cells.

• Dose: 100 mg of S-acetyl L-glutathione per tablet, one tablet daily with a meal.
• Count: 60 tablets, a two-month supply.
• Price: $39.99 as listed, about $0.67 a day.
• Research: a 2025 safety assessment based on lab and animal toxicology supported its use as a food or supplement ingredient under tested conditions.

Who it suits and what to watch

Jarrow suits you if you want to try S-acetyl and prefer one small tablet over a handful of capsules. The two-month bottle also keeps reordering to a minimum.

Do not compare 100 mg with 500 or 1,000 mg of reduced glutathione, because the forms differ and milligrams do not translate directly. The stability claims rest mostly on preclinical work, and larger independent human trials are still needed. The safety work also did not establish long-term benefits for skin, liver, or immunity.

With S-acetyl, you are buying a design with promising lab data, not a proven dose equivalent.

The seven picks side by side

The table below puts dose, form, price, and monthly cost in one place. Prices are listed retail prices at the time of research and change often, so check the current price before you buy.

Dose, form, and price at a glance

The cheapest pick per month is Nutricost, and the most expensive at label dose is Thorne. Dose and price do not move together, because the pricey forms deliver less glutathione per dollar than plain capsules.

Pick	Form	Glutathione per day at label dose	Listed price	Cost per 30 days
Beneve Glutathione +	Blend with DIM and xanthohumol	See product page	$65 ($7 off with subscribe and save)	See product page
Toniiq Glutathione 98%	Reduced, capsule	1,000 mg	$20.97 (60 capsules)	$20.97
VitaUp	Reduced plus milk thistle and vitamin C, capsule	1,000 mg	$26.99 (60 capsules)	$26.99
Nutricost	Reduced, capsule	500 mg	$43.97 (240 capsules)	$5.50
Thorne Glutathione-SR	Sustained-release capsule	350 to 525 mg	$54 (60 capsules)	$54 to $81
Rho Nutrition	Liposomal liquid	500 mg	$52.95 (30 servings)	$52.95
Jarrow S-Acetyl	S-acetyl tablet	100 mg	$39.99 (60 tablets)	$20.00

What 500 mg a day costs

Here is a worked example. Say you want to supply about 500 mg of glutathione a day for 30 days. Nutricost does it for about $5.50. Toniiq costs $10.49 for that amount, since its $20.97 bottle supplies 1,000 mg a day. VitaUp costs $13.50 for the same amount.

Thorne gives you only 350 mg at the two-capsule dose, so reaching 500 mg-equivalent costs about $77. Rho costs $52.95. The gap between the cheapest and the priciest is roughly ten to fourteen times for the same label milligrams. Jarrow is the exception to compare by milligrams, because S-acetyl is a different molecule.

For the same 500 mg a day, you can pay anywhere from about $5 to about $77 a month, so decide what the extra money buys.

Glutathione forms compared: reduced, liposomal, S-acetyl

Reduced glutathione is the only form with the most human data, and the other forms are designs that may improve absorption but lack head-to-head proof. The right form depends on whether you value cost, convenience, or a theoretical edge.

Five forms at a glance

Each row in the table describes how the form is meant to work and how strong the human evidence is. Read the evidence column before you accept a premium price.

Form	How it is designed to work	Evidence	Example pick
Reduced (L-glutathione)	The active form, absorbed through normal digestion	Most human data. A six-month trial at 250 and 1,000 mg daily raised glutathione stores, while a four-week trial at 1,000 mg daily did not	Nutricost, Toniiq, VitaUp
Sustained-release	A matrix releases it gradually	Little direct comparison with other forms	Thorne
Liposomal	Wrapped in phospholipids such as sunflower lecithin	Some early studies favor it, independent trials are limited	Rho
S-acetyl	Acetyl group on sulfur for stability	Mostly lab and animal work, plus a small human crossover study	Jarrow
Precursors (NAC, glycine)	Supply building blocks the body uses to make its own	A different strategy, not glutathione itself	Not in this list

How to decide between them

Start with reduced glutathione unless you have a reason not to. A six-month randomized trial found that 250 mg and 1,000 mg a day both increased glutathione in several body compartments, with some measures rising more at the higher dose. That is the best evidence behind any form, and it used a plain oral product.

Move to liposomal or S-acetyl only when something else drives the choice, such as a dislike of capsules or curiosity about the delivery design. Precursors like NAC and glycine are a separate route to the same goal, and a clinician can help if you want to explore them. Remember that the evidence varies by study length and dose, so no form is a sure win.

Pick the form you will take consistently at a price you can sustain, because proven superiority does not yet exist.

Benefits, dose, and side effects

Oral glutathione supplements are best supported for raising glutathione levels and modest skin effects, while claims about liver, immune, and anti-aging benefits are promising but unproven. Typical studied doses run 250 to 1,000 mg a day, and side effects are usually mild. This is general information, not medical advice.

What the research supports

Glutathione’s role as a cellular antioxidant is well established. Whether swallowing it improves health outcomes is less certain. Small trials suggest modest skin changes. A four-week study using 500 mg daily found lower melanin index readings, and a 12-week study using 250 mg daily found improvements in selected skin measures. These studies were small and short, and results vary between people.

Claims for liver health, immune function, exercise recovery, and healthy aging rest mostly on mechanistic reasoning or early work. Many liver studies use IV glutathione, which is a different thing from a capsule. Skin lightening from pills is slight and inconsistent, and you should avoid IV or compounded glutathione without medical supervision because of reported safety risks.

How much to take and when

There is no recommended daily allowance, because glutathione is not an essential nutrient. Studies using supplementation typically range from 250 to 1,000 mg a day, and many products on the market provide about 500 mg. Starting near the lower end and following the label is a reasonable approach.

Several labels, including Toniiq’s, advise taking it on an empty stomach, while Jarrow’s tablet is taken with a meal. Follow the specific product directions. Plan on consistent daily use for several weeks before judging results, since the published trials ran from four weeks to six months. Pair it with the basics, such as sleep, a vegetable-rich diet, and limited alcohol, because those also influence glutathione status.

Side effects and who should check first

Oral and topical glutathione appear well tolerated at typical doses, although long-term data are limited. Mild digestive symptoms such as bloating or nausea are the most reported effect. Some capsules have a sulfur-like smell, which comes from the ingredient and is not a defect.

Talk to a healthcare professional before starting if you take prescription or over-the-counter medications. Acetaminophen (Tylenol) is metabolized partly through glutathione, and high or prolonged doses can temporarily deplete liver glutathione. Evidence is also lacking for pregnancy and breastfeeding, so ask first. The FDA does not regulate supplements the way it regulates medications, so choose independently tested products.

Glutathione supplements are usually well tolerated at 250 to 1,000 mg a day, but medications, pregnancy, and health conditions are reasons to ask your clinician first.

Choosing your glutathione supplement

Pick the simplest option that matches your goal. For the lowest cost per day, a plain reduced capsule like Nutricost or Toniiq does the job. For sport certification, choose Thorne. For liquid or novel delivery, consider Rho or Jarrow, knowing the proof is early. Whichever you buy, look for a listed dose between 250 and 1,000 mg, independent testing, and ingredients you actually want.

If you want antioxidant support plus hormone-support ingredients in one product, Beneve Glutathione + combines glutathione, DIM, and xanthohumol. Check the product page for the per-serving amounts, and speak with your clinician first if you have a medical condition or take medication.