At 250mg, this **niacin** tablet is a pharmacologically active dose — enough to trigger the classic niacin flush within about 20 minutes, a warm, red tingling across your skin. That's the signature of nicotinic acid, the standard form in a plain niacin tablet like this. For energy and general vitamin B3 status, one tablet far exceeds what you need; the flush is harmless, just startling if you're not ready for it, and taking it with food eases it.

Where 250mg falls short is cholesterol: it sits below the 500–1,000mg range the lipid research used, so it's only a starting point if HDL and triglycerides are your target — and even those high-dose trials largely failed to show a real heart-disease benefit. Bottom line: more than enough B3 for energy, a low opening dose for cholesterol, and a guaranteed flush at this strength.

BioStacks
GNC

Niacin 250 mg

1 Tablet · 100 servings

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What it does

Vitamin B3

Form not confirmedGrade —

Helps convert food into cellular energy and supports normal metabolic reactions.

Energy
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Ingredients (1)

IngredientDoseTarget/referenceForm

Other ingredients

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.

Croscarmellose SodiumDisintegrant

Cross-linked cellulose derivative used as a superdisintegrant

Dicalcium PhosphateBinder

Calcium and phosphorus compound used as binder

Microcrystalline CelluloseBinder

Plant-derived cellulose used as a binder and filler in supplements

Stearic AcidLubricant

Saturated fatty acid used as tablet lubricant

Lab testing

How to take it

With food

On the label

As a dietary supplement, take one or two tablets daily.

Price check

$9.99

$0.10 / serving

$10$20$50

Cheaper than 73% of 82 vitamin B3 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.

Not medical advice. Consult your healthcare professional.

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