NOW Foods Glutathione 500 mg Review

Glutathione 500 mg Veg Capsules from NOW Foods. Product color: Beige. Listed with milk thistle extract and alpha lipoic acid. Glutathione is a small peptide molecule composed of three amino acids: cysteine, glutamic acid, and glycine. It is produced by every cell of the body, with especially high levels in the liver. Glutathione is critical for healthy immune system function, necessary for proper detoxification processes, and supports healthy aging. It also plays a critical role in maintaining cellular health by directly neutralizing free radicals, as well as by maintaining the activity of vitamins C and E. Milk thistle extract and alpha lipoic acid are included as complementary ingredients. Natural color variation may occur in this product. Each serving of 1 veg capsule provides 500 mg Glutathione (Reduced Form), 100 mg Milk Thistle Extract standardized to 80 mg Silymarin Flavonoids, and 50 mg Alpha Lipoic Acid. Suggested usage: take 1 capsule daily, preferably on an empty stomach. Store in a cool, dry place after opening. Other ingredients are hypromellose cellulose capsule, microcrystalline cellulose, magnesium stearate from vegetable source, and silicon dioxide. The product is not manufactured with wheat, gluten, soy, milk, egg, fish, shellfish, tree nut or sesame ingredients, though it is made in a GMP facility that processes other ingredients containing these allergens. Certifications listed include Halal, Kosher (Triangle K), Non-GMO, Intertek GMP Supplement Certification, and Vegan. Made and quality tested in the USA with globally sourced ingredients. The bottle for SKU 0175 and 0176 is made from 100% PCR resin. Family owned since 1968. Caution: for adults only; consult a physician if pregnant or nursing, taking medication, or have a medical condition; keep out of reach of children. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

Product Focus: Liver HealthAlso covers:Digestion
Tier ⓘ
Members see this product's tier and why. Tiers run from 1, the strongest evidence, to 5. How we grade →
Evidence ⓘ
How strongly the evidence says this product works: human studies count most, then real reviews, then our biohacker panel.
Positive Reviews
Biohacker Mentions
Cost per month
$24

Study, Trial or Testing Result Summary

MembersHuman studies

1 of these 80 human studies gave the ingredient by drip, not by mouth.

This capsule's liver support rests mainly on milk thistle, given at a studied dose. A review of 55 trials in 3,545 people with liver injury found its active extract, silymarin, two main liver enzymes, with in drug or alcohol related liver disease. …

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Review Totals and Summary

Members65,954 reviews
65,954 reviews · IHerb 47,251 · NHC 16,908 · Vitacost 1,501 · Walmart 200 · NOW Foods website 50 · EBay 40 · Macy's 4

This suggests a generally reception among customers. **What Buyers Say It Did For Them** users reported a range of from taking these capsules. Some experienced a to their immune system, noting it " the immune system" and even them avoid illness when exposed to viruses. …

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Biohacker Summary

MembersWhat our biohacker panel says

Milk thistle is the main ingredient here, and the panel leans toward it, though . Three of them it, for detox support, for the of alcohol and certain meds, and for liver markers. …

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RAL Summary

MembersThe tier and why

The count of 65,954 reviews does fit this single product, since our own review summary describes only about 250 ratings, so the counts likely come from a wider pool such as the brand or seller. Its reviews are set aside, so it is graded on its studies alone. …

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More Details

MembersBody systems · Combine with · Possible side effects

Body systems: Digestive system, Liver. Combine with and possible side are for members.

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Supplement Facts

Glutathione 500 mg · Milk Thistle Extract 100 mg · Alpha Lipoic Acid 50 mg
Supplement Facts
Serving Size 1 Veg Capsule
Servings Per Container 120
Amount Per Serving% Daily Value
Glutathione (Reduced Form)500 mg
Milk Thistle Extract (Silybum marianum) (Fruit/Seeds) (Standardized to 80 mg Silymarin Flavonoids - equivalent 80%)100 mg
Alpha Lipoic Acid50 mg

Other ingredients: Hypromellose (cellulose capsule), Microcrystalline Cellulose, Magnesium Stearate (vegetable source) and Silicon Dioxide.

Directions: Take 1 capsule daily, preferably on an empty stomach.

Label source: Nowfoods · Report a label change

Where to Buy

NOW Foods · Nhc
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Graded October 26, 2026 by the Reverse Age Lab evidence engine, from human studies, real reviews and our biohacker panel. How we grade. Is this medical advice? No. Rala organizes the published evidence; go over any change with your doctor, especially if you take meds.