BioStacks
Best for
Ingredients (9)
PureWay-C
100%Dose
116 mg
Target
100–500 mg
Form
Premium
Vitamin C
100%Dose
100 mg
Target
100–500 mg
Form
Not listed
Milk Thistle extract
33%Dose
50 mg
Target
150–600 mg
Form
Budget
BIOSINT Acetyl L-Carnitine
20%Dose
100 mg
Target
500–2000 mg
Form
—
N-Acetyl-L-Cysteine
17%Dose
100 mg
Target
600–1800 mg
Form
—
Other Ingredients (3)
Rice FlourFiller
Rice-based ingredients carry risk of inorganic arsenic contamination (FDA and Consumer Reports). Rice accumulates arsenic from soil at higher rates than other grains. Used as a cheap filler — adds nothing beneficial.
Magnesium StearateLubricant
A salt of stearic acid used as a lubricant in tablet and capsule production
GelatinCapsule
Protein derived from collagen, used in traditional capsule shells
How to Take It
Take it anytime
What's in this absorbs poorly without a fat-containing meal — take it with one.
With a meal containing fat
NAC does better on an empty stomach, but something else in this bottle needs food. Taking the whole product with a meal is the better trade — an upset stomach is why most people stop.
On the label
Take 1 capsule once or twice daily or as directed by your healthcare professional.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$20.62
Cheaper than 81% of 44 liver 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.