A single capsule per serving makes dosing as simple as it gets. The capsule is mid-to-large in size but standard for this dose range. No mixing, measuring, or refrigeration is required.
A straightforward high-dose glutathione capsule from one of the most trusted names in the supplement aisle.
NOW Foods Glutathione 500 mg is aimed at adults who want a no-frills, higher-potency glutathione supplement without navigating complicated delivery systems or premium pricing. In our evaluation, the capsule format stood out for its simplicity — easy to add to an existing supplement routine and widely available both …
Quantitative scoring on the metrics that matter for glutathione. Higher is better.
A single capsule per serving makes dosing as simple as it gets. The capsule is mid-to-large in size but standard for this dose range. No mixing, measuring, or refrigeration is required.
The packaging is clean and functional rather than premium — a practical amber bottle with a clear label. NOW Foods' consistent branding makes it easy to identify on a shelf, though the aesthetic lags behind newer direct-to-consumer brands.
The label clearly lists all active and inactive ingredients with amounts, which is a baseline expectation the brand meets reliably. NOW Foods participates in third-party quality programs, adding a layer of credibility beyond self-reported GMP compliance. The source and form of glutathione used (reduced L-glutathione) is stated directly.
The addition of NAC and alpha-lipoic acid as co-factors is a genuine differentiator over single-ingredient competitors at a similar price. However, the formulation uses a conventional capsule without absorption-enhancing technology, which limits its standing against liposomal or Setria-branded products. It covers the basics well without breaking new ground.
On a per-milligram basis, this is among the more cost-efficient glutathione options readily available to US consumers. The inclusion of co-factors adds perceived value without significantly raising the price. For shoppers prioritizing budget alongside dose, this product is hard to beat in the conventional capsule segment.
Practical considerations for daily operation.
A single capsule per serving makes dosing as simple as it gets. The capsule is mid-to-large in size but standard for this dose range. No mixing, measuring, or refrigeration is required.
A single capsule per serving makes dosing as simple as it gets. The capsule is mid-to-large in size but standard for this dose range. No mixing, measuring, or refrigeration is required.
Keep the unit clean and store it in a dry case to preserve accuracy long-term.
Best kept on a counter or shelf at home; not engineered for daily commuting.
App access unlocks history and trend tracking, but on-device readouts cover daily use.
This supplement is positioned for general wellness consumers in the US who want antioxidant support and have some familiarity with the role glutathione is often marketed to play — supporting immune function, liver health, and skin vitality. It is not a niche or clinical product; it sits squarely in the mainstream supplement market.
The 500 mg dose makes it particularly relevant for adults who have done basic research and want a higher per-capsule amount rather than splitting two or three lower-dose capsules throughout the day. It is a good fit for someone building or refining a supplement stack rather than looking for a single magic solution.
Because NOW Foods products are sold widely in grocery chains, health-food stores, and major online platforms, this product is accessible in a way that many boutique supplement brands simply are not. That availability is a genuine lifestyle advantage for consistent, long-term use.
The primary active ingredient is reduced L-glutathione, the form most commonly found in oral supplements. Reduced glutathione is the biologically active form, though some scientific discussion continues about how efficiently it is absorbed through the gastrointestinal tract in this format.
NOW's version typically pairs the glutathione with N-acetyl cysteine (NAC) and alpha-lipoic acid as supporting antioxidants. NAC is a precursor to glutathione production in the body and has its own established presence in the supplement market, while alpha-lipoic acid is valued for its role in the antioxidant network. The inclusion of both adds context and potential complementary benefit, even if individual doses are not at the higher end seen in dedicated single-ingredient NAC or ALA supplements.
The capsule shell and inactive ingredients are standard for the category. Users with sensitivities should review the full ingredient list on the current product label, as formulations can change across product generations.
One of the most discussed topics in the glutathione supplement category is whether oral capsules can meaningfully raise glutathione levels in the body. The digestive process breaks down many peptides and proteins before they reach systemic circulation, and glutathione — being a tripeptide — faces this same challenge.
Some published research suggests that certain oral forms can contribute to elevated glutathione levels with consistent use, while other work indicates that the increase is modest compared to intravenous or liposomal delivery. NOW Foods does not make specific bioavailability claims, which is an honest and appropriate position given the ongoing science.
For consumers weighing this product against a liposomal alternative, the honest answer is that the liposomal format is often marketed as offering superior absorption due to phospholipid encapsulation, though independent head-to-head comparisons at the consumer level are limited. If absorption is a top priority rather than cost or simplicity, that tradeoff deserves consideration before purchasing.
In everyday use, the capsule is straightforward — no unusual taste, no preparation required, and no special storage conditions beyond keeping the bottle away from heat and moisture. For people who take supplements with breakfast or as part of a morning routine, it adds minimal friction.
The capsule size is notable. At 500 mg of active ingredient plus co-factors and a capsule shell, it is a medium-to-large capsule by supplement standards. Most adults will find it manageable with water, but those who are sensitive to capsule size may want to be aware before ordering.
Long-term routine use is where this product earns its reputation. Many glutathione supplements are not intended to produce dramatic or immediate effects; they are wellness-support products. Users who approach this with realistic expectations — consistent daily use over weeks, as part of a broader healthy lifestyle — tend to have more positive experiences than those expecting quick, noticeable changes.
The US glutathione supplement market broadly divides into three formats: conventional capsules or tablets, liposomal liquids and softgels, and products using licensed ingredient forms such as Setria glutathione. NOW Foods Glutathione 500 mg occupies the conventional capsule tier and competes primarily on dose and price.
Against other standard capsule competitors, NOW Foods holds up well on brand recognition, manufacturing transparency, and overall value. Brands offering 250 mg capsules at similar prices are objectively less cost-efficient on a per-milligram basis. The co-factor additions also distinguish this product from bare single-ingredient alternatives at comparable price points.
Where it concedes ground is against liposomal products, which command higher prices but are marketed with absorption-focused messaging that resonates with more research-oriented consumers. Setria-branded products similarly appeal to buyers who want a specific licensed glutathione form with its own published research backing. This product does not compete on those terms, and buyers should self-select accordingly.
NOW Foods Glutathione 500 mg is available from the brand's own website, major online retailers, and brick-and-mortar health-food stores. Prices vary somewhat by channel, and multi-bottle purchases or subscription options often reduce the per-bottle cost. Checking for third-party seller authenticity on marketplace platforms is always prudent with supplements.
As with all dietary supplements, this product is not intended to diagnose, treat, cure, or prevent any disease, and it is not a substitute for professional medical advice. Individuals with existing health conditions, those who are pregnant or nursing, or anyone currently taking medications should consult a healthcare provider before adding a new supplement to their routine.
Label formulations do occasionally change between production runs, so it is worth reviewing the current printed label rather than relying solely on older product listings or reviews. Checking the manufacture date and lot number can also be useful for freshness assurance, as glutathione is sensitive to oxidation and storage conditions over extended periods.
This product suits adults who are new to glutathione supplementation and want a trusted brand at an accessible price. It is also a practical choice for those who prefer the simplicity of a capsule over liposomal liquids or powders. Shoppers already taking a broad supplement stack who want to add glutathione without duplicating other ingredients will appreciate the co-factor additions at a modest cost.
If enhanced absorption is your primary concern, a liposomal glutathione product may be worth the higher price for comparison. Those specifically seeking clinical-grade or Setria-certified glutathione may prefer products that highlight that licensed ingredient form. Users who struggle with larger capsules or have sensitivity to any included excipients should also explore alternatives.
The NOW Foods Glutathione 500 mg alongside our top picks in glutathione.
NOW Foods Glutathione 500 mg offers a high per-capsule dose, a reputable manufacturing background, and accessible pricing — making it one of the more sensible entry points in the oral glutathione category. It lacks the enhanced-absorption framing of liposomal products, so shoppers with specific expectations about bioavailability may want to compare formats. For everyday consumers interested in adding glutathione support to a balanced wellness routine, it earns its place as a reliable, well-priced option.
HealthRankings buys, tests, and rates devices independently. Our scoring blends quantitative measurements (accuracy vs reference, sample-to-sample variability, fit testing) with everyday usability and cost. We disclose affiliate links and never accept paid placement in our rankings.