At 600mg of **N-Acetyl-L-Cysteine** per capsule, this sits right at the floor of the 600–1,200mg range studied for liver and antioxidant support — so one daily capsule delivers a full minimal effective dose. NAC is the most reliable way to raise glutathione, the antioxidant your body uses to detox the liver and shield cells from damage; swallowing glutathione itself mostly fails, but this precursor route actually works.

It's also the compound hospitals rely on as the antidote for acetaminophen overdose — the source of its liver-protective reputation — and it has solid clinical backing for thinning and clearing mucus. The small amounts of selenium and molybdenum here are supporting co-factors, not headline ingredients.

Take it on an empty stomach for best absorption, even though the label allows it with food. To reach the upper clinical range, you'd add a second capsule.

BioStacks
Lake Avenue Nutrition

NAC N-Acetyl-L-Cysteine

1 Capsule · 120 servings · $0.14/serving

64 / 100Good

Best for

Score Breakdown

Formulation
64
Safety
100
Final score
64/100

Ingredients (3)

N-Acetyl-L-Cysteine600 mg

Within effective range

Molybdenum50 mcg

Within effective range

Selenium25 mcg

25% of effective dose · Premium form

Other Ingredients

Fillers, coatings, and additives

6Safe

Magnesium StearateLubricant

Safe

Silicon DioxideAnti-caking

Safe

Dicalcium PhosphateBinder

Safe

Gum AcaciaBinder

Safe

Microcrystalline CelluloseBinder

Safe

Stearic AcidLubricant

Safe

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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.