non-nutrient/non-botanical
N-Acetyl Cysteine supplements
Half of the 1,259 N-acetyl cysteine supplements in the NIH label database that print an amount list 150 mg or less per serving; the middle half list 55 mg to 500 mg (DSLD version 9.4.0, January 2026). The 140 products whose only supplement ingredient is N-acetyl cysteine list a median of 600 mg.
- Products listing it
- 1,6821,259 print an amount; 423 list it inside a blend without an amount
- Median per serving
- 150 mgmiddle half 55 mg to 500 mg
How much N-acetyl cysteine do supplements contain?
The median product lists 150 mg per serving. One in ten lists 25 mg or less, one in ten 600 mg or more. The amount printed most often is 100 mg (178 products).
Products by amount of N-acetyl cysteine per serving
1,259 products, log scale; extreme 0.2% at each end left out of the drawing.
Source: Supplement Facts rows of every product's current label, NIH ODS Dietary Supplement Label Database version 9.4.0; amounts in one measure (weight).
Which products list the most N-acetyl cysteine?
On-market products, per serving, with a plausible amount: the rule leaves out likely entry slips, such as an amount far beyond every other label with no %DV or strength on the label to back it (each product page still shows its own amount, marked).
- NAC + Glycine Powder Natural Peach Ginger FlavorPure Encapsulations1,800 mg
- N-Acetyl-L-Cysteine 1600 mgNaturaLife Labs1,600 mg
- VirunexHoltraCeuticals1,500 mg
- NAC N-Acetyl-L-Cysteine 600 mgThe Vitamin Shoppe1,200 mg
- Anti-Alcohol Antioxidants With HepatoProtection ComplexLife Extension1,200 mg
- Anti-Alcohol With HepatoProtection ComplexLife Extension1,200 mg
- Ar1macare ProOlympus Labs1,200 mg
- Anti-Alcohol HepatoProtection ComplexLife Extension1,200 mg
Have the amounts changed over the years?
Products whose current label entered DSLD in 2012 list a median of 100 mg; those entered in 2025, 200 mg.
| Year | Products | Median per serving |
|---|---|---|
| 2012 | 94 | 100 mg |
| 2013 | 97 | 100 mg |
| 2014 | 42 | 100 mg |
| 2015 | 51 | 100 mg |
| 2016 | 46 | 200 mg |
| 2017 | 76 | 158.5 mg |
| 2018 | 62 | 157.5 mg |
| 2019 | 72 | 125 mg |
| 2020 | 149 | 200 mg |
| 2021 | 100 | 250 mg |
| 2022 | 119 | 200 mg |
| 2023 | 118 | 200 mg |
| 2024 | 120 | 250 mg |
| 2025 | 98 | 200 mg |
Source: DSLD label entry dates and amounts, current labels.
In which products and brands?
Products listing N-acetyl cysteine by DSLD product type
Brands listing it most: Douglas Laboratories (45), XYMOGEN (36), Source Naturals (29), Pure Encapsulations (26), Integrative Therapeutics (22), Metagenics (20), Life Extension (20), Natural Factors (17), NuMedica (16), Ortho Molecular Products (14).
Every product listing N-acetyl cysteine
1,682 products, A to Z by name (page 12 of 34), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.
- HDL AssistEnzymatic Therapy · off the marketin a blend
- HDL AssistNature's Wayin a blend
- HDL BoosterEnzymatic Therapy · off the marketin a blend
- Hdl RxIntegrative Therapeuticsin a blend
- Healthy LiverWholeHealth100 mg
- Hear Well1-800-WellMed · off the market50 mg
- Hearing SupportNatures Plus AgeLoss · off the marketin a blend
- Hearing SupportNaturesPlus AgeLossin a blend
- Hearing SupportTotally Products110 mg
- Heart SupportNatures Plus AgeLoss · off the marketin a blend
- Heat Hardcore Orange Dream FlavorBucked Up600 mg
- Heavy Metal CleanseRenew Life50 mg
- Heavy Metal Cleanse 2 Evening FormulaRenew Life50 mg
- Heavy Metal CleanzSignature Supplements100 mg
- Heavy Metal DetoxNature's Sunshinein a blend
- Heavy Metal DetoxHoltraCeuticals200 mg
- Heavy Metal GoneDr. Clark Store50 mg
- Heavy Metal SupportDr. Clark Store170 mg
- Hepa PlusVillage Green Pathway100 mg
- Hepa ResultsPhysician's Signature167 mg
- HepagardNutreancein a blend
- HepagenCardiovascular Research30 mg
- Hepatatone PlusDesigns for Health400 mg
- Hepatic DetoxProEnzolin a blend
- HepaticlearDaVinci Laboratories50 mg
- HepatoCleanseMarket Americain a blend
- HepatoCleanseNutriCleanin a blend
- HepatoCleanse Liver Support FormulaNutriClean · off the marketin a blend
- HepatotheraKlaire Labs · off the market150 mg
- Hepatothera ForteKlaire Labs · off the market200 mg
- HerFruitful · off the market50 mg
- Herbal Lung FormulaIndiana Botanic Gardens · off the market600 mg
- Herbal Lung FormulaBotanic Choice600 mg
- Hi-Vidomin Nutritional Multi (hVnl-M)Douglas Laboratories · off the market600 mg
- High Potency Liver Support SupplementVitalsin a blend
- High Potency Vita-Lea Gold With Vitamin KShaklee50 mg
- Hist ResetPure Encapsulations100 mg
- Hist-ResistVinco50 mg
- HistametPathway To Healing25 mg
- HM ComplexPure Encapsulations300 mg
- HM ProtectNuMedica100 mg
- Homocysteine CardioplexPatient One MediNutritionals · off the market600 mg
- Homocysteine CardioplexPatient One 1 MediNutritionals600 mg
- Homocysteine ReduxNutri-Westin a blend
- Homocysteine SupportPureFormulas100 mg
- Homocysteine SupremeDesigns for Health100 mg
- Hormone Balancing DetoxGottfried Institute100 mg
- Hormone ClearPriority One Nutritional Supplements600 mg
- HTN ComplexDesigns for Health500 mg
- I CompPriority One Nutritional Supplements200 mg