BioStacks
Best for
Ingredients (9)
Molybdenum
100%Dose
100 mcg
Target
45–75 mcg
Form
Premium
Niacin
80%Dose
20 mg
Target
25–500 mg
Form
Standard
Vitamin C
100%Dose
250 mg
Target
50–250 mg
Form
Budget
Riboflavin
20%Dose
5 mg
Target
25–100 mg
Form
Budget
Luteolin
100%Dose
100 mg
Target
100–300 mg
Form
—
Other Ingredients (1)
Capsule ShellCapsule
Generic capsule shell where the label does not specify the material. Common materials are hypromellose (HPMC) for vegetarian capsules and gelatin for traditional capsules — both are GRAS-listed and safe. Fish gelatin and pullulan variants also exist.
How to Take It
Best taken in the morning
The Vitamin B2 in it is what pulls this toward the morning. 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
As a dietary supplement, take 2 capsules daily, between meals, or as directed by a health professional.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$58.60
Pricier than 95% of 544 vitamin C supplements
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Sources & Scoring
Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and 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. clinical 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.