BioStacks
Best for
Ingredients (1)
Niacin
100%Dose
250 mg
Target
25–500 mg
Form
Premium
Other Ingredients (3)
IsomaltSweetener
A poorly-absorbed sugar alcohol that can cause bloating, gas, and laxative effects at higher doses (EFSA notes laxative threshold for polyols). Tolerable for most, but cumulative across products.
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.
Microcrystalline CelluloseBinder
Plant-derived cellulose used as a binder and filler in supplements
How to Take It
Take it anytime
This is the flushing form. Take it with food to blunt the flush — it usually fades after a couple of weeks of consistent use.
With food
On the label
As a dietary supplement for adults, take one (1) tablet daily with food. Do not exceed one tablet daily without consulting a physician.
General guidance based on the ingredients, not a substitute for the label or your doctor.
Price Check
$15.99
Near the median of 82 vitamin B3 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. 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.