This product is designed to support your body's antioxidant defenses, but the doses of the two key ingredients fall well short of clinical ranges. **L-Glutathione** (Setria, reduced form) comes in at just 50mg per capsule — most research on oral glutathione uses 250–500mg daily. **L-Cysteine** HCl provides 200mg, roughly a third of the 600mg minimum studied for glutathione support.
**Vitamin C** is the strongest ingredient here for you at 500mg, comfortably within the 250–2,000mg clinical range. It does play a role in recycling glutathione, so there's a logical synergy — but the glutathione and cysteine themselves are too low to expect meaningful standalone benefit.
If your goal is boosting glutathione levels, the cysteine dose here is unlikely to move the needle on its own. You'd need to rely heavily on the vitamin C component, which is well-dosed but serves a broader purpose than targeted glutathione support.
Life Extension, Glutathione, Cysteine & C, 100 Capsules
Capsule · 100 servings · $0.17/serving
Supports
Score Breakdown
Ingredients (3)
Within effective range · Budget form
33% of effective dose
20% of effective dose · Premium form
Label Nutrition Facts
Other Ingredients
Fillers, coatings, and additives
Silicon DioxideAnti-caking
Microcrystalline CelluloseBinder
Stearic AcidLubricant
Microcrystalline CelluloseBinder
vegetable stearate
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Sources & Scoring
Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and National Academies Dietary Reference Intakes (DRI).
This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.
The score analyzes what's on the label: ingredient doses vs. clinical ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.