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

• NAC 600 mgSolgar600 mg
• NAC 600 mgThe Vitamin Shoppe600 mg
• NAC 600 mgNature's Truth · off the market600 mg
• NAC 600 mgAN Amazing Nutrition Amazing Formulas600 mg
• NAC 600 mgBronson600 mg
• NAC 600 mgBest Naturals600 mg
• NAC 600 mgMetabolic Maintenance600 mg
• NAC 600 mgPatient One 1 MediNutritionals600 mg
• NAC 600 mgNutraBio600 mg
• NAC 600 mgLuckyVitamin600 mg
• NAC 600 mgPure Encapsulations600 mg
• NAC 600 mgHealth Thru Nutrition600 mg
• NAC 600 mgSUPPSNZ600 mg
• NAC 600 mgNutricost600 mg
• NAC 600 mgWholesome Story600 mg
• NAC 600 mgNOW600 mg
• NAC 600 mgEmerald Labs600 mg
• NAC 600 mgALLMAX ESSENTIALS600 mg
• NAC 600 mgSports Research600 mg
• NAC 600 mgCelebrate600 mg
• NAC 600 MilligramsNutraBio600 mg
• NAC 750 mgdr.bo750 mg
• NAC 880 mgFresh Nutrition880 mg
• NAC 900 mgPure Encapsulations900 mg
• NAC Antioxidant (N-Acetyl L-Cysteine) 400 mgBronson400 mg
• NAC Detox RegulatorsDoctor's Best600 mg
• Nac Detoxifier Self DefenseHolistic Healing Center · off the market750 mg
• NAC EnhancedAllergy Research Group200 mg
• NAC Enhanced Antioxidant FormulaAllergy Research Group · off the market200 mg
• NAC Enhanced Antioxidant FormulaNutriCology200 mg
• NAC Ginger CurcuminBlueprint Bryan Johnson1,200 mg
• NAC MdMD Prescriptives600 mg
• NAC N-Acetyl CysteineXYMOGEN · off the market600 mg
• NAC N-Acetyl CysteineLake Avenue Nutrition · off the market600 mg
• NAC N-Acetyl CysteineNuMedica600 mg
• NAC N-Acetyl Cysteine 600 mgVitamin World · off the market600 mg
• NAC N-Acetyl Cysteine 600 mgCalifornia Academy of Health600 mg
• NAC N-Acetyl Cysteine 750 mgCountry Life750 mg
• NAC N-Acetyl L-CysteineHard Rhino600 mg
• NAC N-Acetyl l-Cysteine 1000 mg CapsulesBulkSupplements.com1,000 mg
• NAC N-Acetyl L-Cysteine Capsules 600 mgBulkSupplements.com600 mg
• NAC N-Acetyl-Cysteine 1000 mgProtocol For Life Balance1,000 mg
• NAC N-Acetyl-Cysteine 600 mgSwanson Premium Brand · off the market600 mg
• NAC N-Acetyl-Cysteine 600 mgProtocol For Life Balance600 mg
• NAC N-Acetyl-L-CysteineNutriCology500 mg
• NAC N-Acetyl-L-CysteineLake Avenue Nutrition600 mg
• NAC N-Acetyl-L-CysteineAllergy Research Group500 mg
• NAC N-Acetyl-L-Cysteine 500 mgNatural Factors500 mg
• NAC N-Acetyl-L-Cysteine 500 mgGroovy Bee500 mg
• NAC N-Acetyl-L-Cysteine 600LifeLink600 mg

Where next?

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