Thorne doses **N-Acetyl-L-Cysteine** at 500mg per capsule, with a label recommendation of two to three daily — putting you at 1,000–1,500mg, comfortably within the 600–1,800mg clinical range. At that intake, you're getting solid support for glutathione production, the antioxidant your liver relies on for detoxification and your cells use to defend against oxidative damage.
Beyond liver health, NAC has clinical backing for respiratory function and immune support. The capsule format gives you dosing flexibility — two capsules for maintenance, three to push toward the upper clinical range.
A single capsule at 500mg falls just short of the 600mg minimum studied dose. If you only take one daily, you're below the evidence threshold — the label's multi-capsule recommendation is where the clinical support actually begins.
BioStacks
Other Ingredients (3)
Silicon DioxideAnti-caking
Fine silica powder used to prevent clumping
HypromelloseCapsule
Plant-derived capsule material from cellulose
LeucineFlow Aid
Branched-chain amino acid used as a processing aid
How to Take It
Take it anytime
Best absorbed between meals, away from food.
On an empty stomach
Split into 2 doses across the day
On the label
Suggested use: Take 1 capsule two or three times daily or as recommended by your health-care practitioner.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$33.00
Pricier than 75% of 77 NAC supplements
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Sources & Scoring
Nutrient data (RDA, UL, and safety thresholds) sourced from the NIH Office of Dietary Supplements and the 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. studied 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.