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.

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).

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.

In which products and brands?

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 19 of 34), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.

• Mood SupportNaturesPlus AgeLoss25 mg
• Mood, Neuro & Immune SupportVitinityin a blend
• Morning FormulaRenew Life100 mg
• MorphoprimeMorphogen Nutrition600 mg
• MRP Active ChocolateNutracore Nutrition · off the marketin a blend
• MRP Active Milk And CookiesNutracore Nutrition · off the marketin a blend
• MRP Active VanillaNutracore Nutrition · off the marketin a blend
• MTHFR EndurePhysician Designed100 mg
• MTHFR RenewPhysician Designed100 mg
• MTHFR Tiny VitePhysician Designed12.5 mg
• MucosagenOrtho Molecular Products150 mg
• Mucous FormulaBotanic Choice · off the market333.3 mg
• Mucous FormulaIndiana Botanic Gardens333 mg
• MultiAyush Herbs40 mg
• Multi + Pro FGenestra Brands16.7 mg
• Multi + Pro F50+Genestra Brands25 mg
• Multi + Pro MGenestra Brands25 mg
• Multi + Pro M50+Genestra Brands16.7 mg
• Multi Formula With AntioxidantsBariatric Advantage100 mg
• Multi Formula without IronBariatric Advantage100 mg
• Multi Vitamin+ Apricot-MangoEmergen-C10 mg
• Multi Vitamin+ Cherry-PomegranateEmergen-C10 mg
• Multi Vitamin+ Cherry-Pomegranate Flavored Fizzy DrinkEmergen-C · off the market10 mg
• Multi+ Vita-Lea Gold with Vitamin KShaklee50 mg
• Multi+ Vita-Lea Gold Without Vitamin KShaklee50 mg
• Multi-Nutrient Support XPureFormulas150 mg
• Multi-Probiotic Sinus SupportDouglas Laboratoriesin a blend
• MultiMedica for MenNuMedica50 mg
• MultiMedica for WomenNuMedica50 mg
• Multiphase DetoxDaVinci Laboratories of Vermont · off the market250 mg
• Multiphase DetoxDaVinci Laboratories250 mg
• Multiplex-1Integrative Therapeutics · off the market25 mg
• Multiplex-1 without added IronIntegrative Therapeutics25 mg
• Multiplex-1 without IronIntegrative Therapeutics · off the market25 mg
• MultivitaminLightbody60 mg
• Multivitamin & Mineral Complex Natural Mango FlavorCountry Life10 mg
• Muscleprime White RaspberryALLMAX NUTRITION · off the market50 mg
• MusclePrime White RaspberryALLMAXin a blend
• MyoviteMYOGENIXin a blend
• N-A-C 500 mgJarrow Formulas · off the market500 mg
• N-A-C 500 mgCarlson500 mg
• N-A-C Sustain 600 mgJarrow Formulas600 mg
• N-Acetyl CysteinePhysician's Preference · off the market600 mg
• N-Acetyl CysteineOrtho Molecular Products500 mg
• N-Acetyl CysteineNHC Natural Healthy Concepts500 mg
• N-Acetyl CysteineSource Naturals · off the market1,000 mg
• N-Acetyl CysteineMoss Nutrition700 mg
• N-Acetyl CysteineNature's Sunshine300 mg
• N-Acetyl Cysteine (NAC) 675 mgOrmus Minerals675 mg
• N-Acetyl Cysteine 1,000 mgSource Naturals1,000 mg

Where next?

• Check an amount of N-acetyl cysteine
• Labels above the upper limit
• All ingredients