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Double Strength Flush-Free Niacin 500 mg

1 Capsule · 90 servings · $0.16/serving

iHerbAmazon

Best for

Energy

Ingredients (2)

Niacin (Vitamin B3)

100%

Dose

500 mg

Target

25–500 mg

Form

Budget

Inositol

7%

Dose

135 mg

Target

2000–4000 mg

Form

Budget

Other Ingredients (4)

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.

Silicon DioxideAnti-caking

Fine silica powder used to prevent clumping

HypromelloseCapsule

Plant-derived capsule material from cellulose

Stearic AcidLubricant

Saturated fatty acid used as tablet lubricant

How to Take It

Take it anytime

Trials dose 2 g twice daily — split it morning and evening rather than taking it all at once.

With or without food

On the label

As a dietary supplement, take 1 Vcap daily as needed, preferably with meals; or take as directed by your health practitioner.

General guidance based on the ingredients, not a substitute for the label or your doctor.

Price Check

$14.69

$10$20$50

Cheaper than 80% of 55 inositol 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.

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