Best N-Acetyl cysteine (NAC) products by transparent scoring (2026)
Single-ingredient products scored by public rules: dose fit, label transparency, data verification, company transparency, third-party testing. Not a measure of efficacy or safety. No paid placement.
Products ranked: 117 · Reference range: 150 – 600 mg (source) · Updated 2026-11-01
Reference range: derived from the cited reference values; see the methodology.
Single-ingredient products only.
Left out of this list: combination products (a single-ingredient list exists) (6)
Dose fit 40 · Label transparency 20 · Data verification 15 · Company transparency 15 · Third-party test 10 (No data (not scored); the other four parts are rescaled from 90 to 100) — Methodology · N-Acetyl cysteine (NAC) →
| Rank | Product | Per day | Score | Breakdown | ||||||||||||||||
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| 1 tie |
N-Acetyl Cysteine Nature's Sunshine · US NIH DSLD |
600 mg | 100.0 | Breakdown
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| 1 tie |
N-Acetyl Cysteine 600 mg Swanson · US NIH DSLD |
600 mg | 100.0 | Breakdown
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| 1 tie |
NAC N-Acetyl Cysteine XYMOGEN · US NIH DSLD |
600 mg | 100.0 | Breakdown
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| 4 tie |
N-Acetyl-L-Cysteine NAC 600 mg GNC · US NIH DSLD |
600 mg | 97.8 | Breakdown
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| 4 tie |
NAC (N-Acetyl-Cysteine) Twinlab · US NIH DSLD |
600 mg | 97.8 | Breakdown
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| 4 tie |
NAC 600 mg The Vitamin Shoppe · US NIH DSLD |
600 mg | 97.8 | Breakdown
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| 4 tie |
NAC N-Acetyl Cysteine 600 mg Vitamin World · US NIH DSLD |
600 mg | 97.8 | Breakdown
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| 8 | NAC N-Acetyl-L-Cysteine 600 mg Puritan's Pride · US NIH DSLD |
600 mg | 94.4 | Breakdown
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| 9 tie |
N-Acetyl Cysteine 600 mg Puritan's Pride · US NIH DSLD |
600 mg | 92.2 | Breakdown
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| 9 tie |
NAC (N-Acetyl-L-Cysteine) 600 mg Solgar · US NIH DSLD |
600 mg | 92.2 | Breakdown
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| 9 tie |
NAC 500 mg Bluebonnet · US NIH DSLD |
500 mg | 92.2 | Breakdown
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| 9 tie |
NAC 600 mg Solgar · US NIH DSLD |
600 mg | 92.2 | Breakdown
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| 13 tie |
Cysteplus Thorne Research, Inc. · Health Canada LNHPD |
500 mg | 87.8 | Breakdown
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| 13 tie |
N-Acetyl-L-Cysteine (NAC) Jarrow Formulas Inc. · Health Canada LNHPD |
500 mg | 87.8 | Breakdown
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| 13 tie |
NAC 600 mg Pure Encapsulations · Health Canada LNHPD |
600 mg | 87.8 | Breakdown
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| 16 tie |
N-Acetyl Cysteine NHC Natural Healthy Concepts · US NIH DSLD |
500 mg | 83.3 | Breakdown
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| 16 tie |
N-Acetyl Cysteine Ortho Molecular Products · US NIH DSLD |
500 mg | 83.3 | Breakdown
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| 16 tie |
N-Acetyl Cysteine 600 mg VitaCeutical Labs · US NIH DSLD |
600 mg | 83.3 | Breakdown
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| 16 tie |
N-Acetyl Cysteine 600 mg Natural Nutra · US NIH DSLD |
600 mg | 83.3 | Breakdown
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| 16 tie |
N-Acetyl L-Cysteine 600 mg Vitacost · US NIH DSLD |
600 mg | 83.3 | Breakdown
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| 16 tie |
N-Acetyl-L-Cysteine 500 Milligrams Montiff · US NIH DSLD |
500 mg | 83.3 | Breakdown
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| 16 tie |
N-Acetyl-L-Cysteine 600 mg Roex · US NIH DSLD |
600 mg | 83.3 | Breakdown
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| 16 tie |
NAC Pure Nootropics · US NIH DSLD |
500 mg | 83.3 | Breakdown
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| 16 tie |
NAC (N-Acetyl-L-Cysteine 600 mg Nature's Blend · US NIH DSLD |
600 mg | 83.3 | Breakdown
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| 16 tie |
NAC 600 mg Sports Research · US NIH DSLD |
600 mg | 83.3 | Breakdown
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| 16 tie |
NAC 600 mg Nature's Edge · US NIH DSLD |
600 mg | 83.3 | Breakdown
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| 16 tie |
NAC N-Acetyl L-Cysteine Capsules 600 mg BulkSupplements.com · US NIH DSLD |
600 mg | 83.3 | Breakdown
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| 16 tie |
NAC N-Acetyl-L-Cysteine 500 mg Groovy Bee · US NIH DSLD |
500 mg | 83.3 | Breakdown
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| 29 tie |
N-Acetyl Cysteine 600 mg Good 'N Natural · US NIH DSLD |
600 mg | 81.1 | Breakdown
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| 29 tie |
N-Acetyl Cysteine 600 mg Source Naturals · US NIH DSLD |
600 mg | 81.1 | Breakdown
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| 29 tie |
N-Acetyl Cysteine 600 mg PhysioLogics · US NIH DSLD |
600 mg | 81.1 | Breakdown
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| 29 tie |
N-Acetyl L-Cysteine (NAC) Powder Herbadiet · US NIH DSLD |
500 mg | 81.1 | Breakdown
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| 29 tie |
NAC 600 mg tnvitamins · US NIH DSLD |
600 mg | 81.1 | Breakdown
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| 29 tie |
NAC N-Acetyl-L-Cysteine 600 LifeLink · US NIH DSLD |
600 mg | 81.1 | Breakdown
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| 29 tie |
NAC N-Acetyl-L-Cysteine 600 mg Natural Factors · US NIH DSLD |
600 mg | 81.1 | Breakdown
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| 36 tie |
AVAN-D NAC 600mg Capsule PAHANG PHARMACY SDN. BHD. · Malaysia NPRA |
600 mg | 76.7 | Breakdown
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| 36 tie |
AVO Avomucil NAC 200mg Powder Abio Marketing Sdn Bhd · Malaysia NPRA |
200 mg | 76.7 | Breakdown
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| 36 tie |
AVO Avomucil NAC 600mg Powder Abio Marketing Sdn Bhd · Malaysia NPRA |
600 mg | 76.7 | Breakdown
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| 36 tie |
Bio Activ NACLEAR N-ACETYL-L-CYSTEINE 600mg Capsule BIO TREE PHARMACEUTICAL (INT`L) SDN. BHD. · Malaysia NPRA |
600 mg | 76.7 | Breakdown
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| 36 tie |
Biomerit Aireze Capsule Biomerit · Malaysia NPRA |
600 mg | 76.7 | Breakdown
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| 36 tie |
Biotective NAC 600mg Capsule BIO-SCIENCE MARKETING SDN. BHD. · Malaysia NPRA |
600 mg | 76.7 | Breakdown
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| 36 tie |
DSY NAC 400MG CAPSULE CTA NUTRICEUTICALS (ASIA) SDN BHD · Malaysia NPRA |
400 mg | 76.7 | Breakdown
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| 36 tie |
DUO LEAF NAC 200mg Powder (Grape Flavour) STELLAR BIO SDN BHD · Malaysia NPRA |
200 mg | 76.7 | Breakdown
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| 36 tie |
Dissoflam Capsule INNOCEUTICAL SDN BHD · Malaysia NPRA |
600 mg | 76.7 | Breakdown
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| 36 tie |
ELDON DX MUCOWAY TABLET Eldon · Malaysia NPRA |
600 mg | 76.7 | Breakdown
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| 36 tie |
EXCELAB NAC 300MG CAPSULE Excelab · Malaysia NPRA |
300 mg | 76.7 | Breakdown
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| 36 tie |
Genestra Brands Amino NAC | 500 mg | 76.7 | Breakdown
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| 36 tie |
JH Nutrition Nacous Capsule JASE HEALTHCARE SDN. BHD. · Malaysia NPRA |
300 mg | 76.7 | Breakdown
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| 36 tie |
MUCOGO NAC 200mg Effervescent Powder QUANTUM UPSTREAM SDN. BHD. · Malaysia NPRA |
203 mg | 76.7 | Breakdown
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| 36 tie |
MUXINAC TABLET SBL HEALTHCARE SDN BHD · Malaysia NPRA |
600 mg | 76.7 | Breakdown
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100 products were scored; the top 50 are listed here. See the rest in the product list.
For information only; not medical advice. Talk to a doctor or pharmacist before starting or stopping any supplement.