This 500mg **niacin** tablet is plain nicotinic acid — the one form of B3 that actually shifts your lipid profile, raising HDL and lowering triglycerides. At this strength it's working as cholesterol support rather than basic nutrition, and 500mg sits at the top of the studied range for that purpose.

Expect flushing. Nicotinic acid causes warmth and skin redness above roughly 30-50mg, so 500mg will likely trigger it at first — harmless but uncomfortable, and taking it with food helps.

One honest caveat: the two largest trials (AIM-HIGH and HPS2-THRIVE) found no drop in heart events when niacin was added to a statin, and flagged higher diabetes risk at gram-level doses. If you're on a statin or have liver concerns, talk to your doctor before starting.

BioStacks
GNC

Niacin 500 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.

MonoglyceridesEmulsifier

Glycerol monoesters of fatty acids used as emulsifiers and processing lubricants

Magnesium StearateLubricant

A salt of stearic acid used as a lubricant in tablet and capsule production

Oleic AcidEmollient

A monounsaturated fatty acid used as an emollient and penetration aid

Polyethylene Glycol (Coating)Coating

A polyether polymer used as a tablet coating and plasticizer

Silicon DioxideAnti-caking

Fine silica powder used to prevent clumping

Carnauba WaxCoating

Hard plant wax from the carnauba palm used to glaze gummies and tablets

Croscarmellose SodiumDisintegrant

Cross-linked cellulose derivative used as a superdisintegrant

Lab testing

How to take it

With food

On the label

As a dietary supplement, take one tablet daily.

Price check

$19.99

$0.20 / serving

$10$20$50

Pricier than 70% 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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