Nutricost Glutathione 500mg
240 Capsules · Reduced Form L-Glutathione · Gluten Free · Non-GMO · Third Party Tested · GMP Compliant Facility
- ✓500mg reduced-form L-Glutathione per capsule — one of the highest doses available at this price point.
- ✓240 capsules — 240 servings — an 8-month supply at one capsule per day, making it exceptional value.
- ✓Amazon's Choice with 2,000+ monthly buyers — the most purchased direct glutathione supplement in this category.
- ✓Third-party tested, GMP compliant facility — manufactured and quality tested in the USA.
- ✓Clean ingredient list — no unnecessary fillers beyond standard capsule excipients.
🔒 Secure Amazon checkout • Third Party Tested • GMP Certified
Nutricost Glutathione 500mg — Full Review
Nutricost Glutathione 500mg is the best-selling direct glutathione supplement on Amazon — and for straightforward reasons. It offers a high dose of reduced-form L-Glutathione (500mg per capsule), a clean and minimal ingredient list, 240 servings per bottle, and a price point of just $0.17 per capsule. For anyone looking for an affordable, easy-to-take glutathione supplement without complexity, this is the obvious choice in the direct GSH category.
Nutricost is a Utah-based supplement brand known for straightforward, no-frills formulations at competitive prices. Their glutathione capsule earned Amazon's Choice status and regularly sees 2,000+ purchases per month — a strong signal of consistent customer satisfaction at scale.
Important Context: Direct GSH vs. Precursor Approach
Nutricost delivers glutathione directly as L-Glutathione (reduced form). It's worth understanding that research indicates most oral glutathione is broken down in the digestive tract before reaching cells — which is why precursor-based products like Immunocal were developed. Nutricost is an excellent, well-priced option for those who prefer a direct supplementation approach. For clinically validated intracellular glutathione increase, Immunocal's precursor method has a stronger research record. Both have their place depending on your goals and budget.
The capsule format is convenient — one capsule daily with 8–12 oz of water, taken as directed by your physician. At 240 capsules per bottle, this represents roughly 8 months of daily use at under $40 — making it by far the most cost-effective option on our list. The third-party testing and GMP-compliant manufacturing provide meaningful quality assurance for a product at this price tier.
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.
Supplement Facts & Ingredients
Nutricost's ingredient list is clean and minimal. There are no proprietary blends, no hidden ingredients, and no unnecessary additives beyond standard capsule excipients:
Supplement Facts
* Daily Value (DV) not established.
Other Ingredients: Hypromellose (cellulose) capsule, Magnesium Stearate (vegetable source), Microcrystalline Cellulose, Silica.
Nutricost Quality Standards
Nutricost holds four key quality credentials that differentiate it from lower-tier supplement brands:
Non-GMO
No genetically modified organisms — verified non-GMO product.
Gluten-Free
Safe for those with gluten sensitivity or celiac disease.
Third Party Tested
Independently tested for purity, potency, and contaminants.
GMP Compliant
Manufactured in a Good Manufacturing Practice certified facility.
How Does Nutricost Compare to Immunocal?
These are two fundamentally different products with different approaches, price points, and research profiles — and both have a place depending on what you're looking for.
Nutricost delivers glutathione directly — 500mg of reduced L-Glutathione per capsule. It's affordable ($0.17/serving), convenient (capsule format), has a clean ingredient list, and is backed by strong Amazon customer satisfaction. The limitation is the absorption challenge inherent to all direct oral glutathione supplements.
Immunocal delivers Bonded Cysteine™ — the precursor your cells use to synthesize glutathione intracellularly. It's backed by 79 global patents, 85 published studies, and a PDR listing, but costs significantly more (~$5.73/serving). It's the clinically validated option for raising intracellular glutathione levels.
If budget is a primary concern or you want a simple daily capsule, Nutricost is the best value option in the direct GSH category. If maximizing intracellular glutathione through a clinically proven method is the priority, Immunocal is the choice the science supports.
Nutricost Glutathione — Pros & Cons
✔ What We Like
- Exceptional value — $0.17 per serving, ~$40 for 240 days
- High dose — 500mg reduced-form L-Glutathione per capsule
- Amazon's Choice with 4.7 stars from 1,479 reviews
- 2,000+ customers buying every month
- Third-party tested for purity and potency
- GMP compliant manufacturing facility
- Non-GMO and gluten-free
- Clean, minimal ingredient list — no unnecessary fillers
- Convenient capsule format — one per day
- Made and quality tested in the USA
✗ Worth Noting
- Direct oral glutathione faces inherent absorption limitations
- No clinical studies or patents backing this specific product
- Some reviewers note formula changes affecting results
- Not suitable for those under 18 without physician guidance
- No Informed Sport certification for competitive athletes
The Best Value Direct Glutathione Supplement on Amazon
Nutricost Glutathione earns its Amazon's Choice badge and its place on this list. For the price — $39.95 for 240 servings — it's hard to argue with the value. The 4.7-star rating from nearly 1,500 verified reviewers and 2,000+ monthly buyers confirm this is a product that delivers consistent satisfaction. The honest caveat is the absorption limitation of direct oral glutathione. For those who want the most affordable daily supplement and are comfortable with that tradeoff, Nutricost is the clear answer. For maximum intracellular impact backed by clinical research, Immunocal remains our #1.
Buy Nutricost on Amazon →What Verified Buyers Are Saying
This is a great value. 240 capsules, each capsule is one serving. This is my second bottle. I took it for a couple months and had great results: more energy, youthful feeling, felt and looked more muscular, youthful glow, clearer thinking, etc. I take other vitamins like NAC, vitamin C, Magnesium and others. These are good together.
I take this every day! It makes me feel amazing! There is no taste, it helps with overall pain and energy level. My skin feels so much better. I have extreme side effects when I do not take it — immediately I feel the difference, I feel exhausted, my skin becomes dry and I do not feel well when I stop taking this. It's great!
I've been taking these for over a month now (with an equal amount of vitamin C) and I can already see changes in my skin. My complexion is BRIGHTER by 2–3 shades. I use sunscreen daily when going out in the sun. Loving the results. Already ordered my second bottle.
I have been using this brand for quite a while, very happy with this glutathione product. It has become a staple in the house for when we have a few beers or glasses of wine before bed.
Works, no allergies, gives me energy and affordable.
Something changed with the formula. Doesn't do much for the skin.