At 1000mg per capsule, this is a pharmacologic dose of **niacin** — far above the ~16mg you need for energy and squarely in the range used to shift cholesterol, raising HDL and lowering triglycerides. It's plain nicotinic acid, the only form of B3 that actually moves your lipid numbers, so for that goal it's fully dosed.

Because it's immediate-release nicotinic acid, expect the niacin flush — warmth, redness, and tingling within 15-30 minutes. Taking it with a meal blunts this, and it eases with regular use. Immediate-release also strains the liver less than sustained-release niacin, which carries documented liver risk at gram-level doses.

Worth knowing: at this dose, niacin acts like a lipid medication. Large trials found it didn't cut heart events when added to statins and flagged higher diabetes risk, so take it under a clinician's guidance with periodic liver checks, not as a casual energy supplement.

BioStacks
Life Extension

Vitamin B3 Niacin 1000 mg

1 Capsule · 100 servings

iHerbAmazon

Best for

Energy

Ingredients (1)

Niacin

100%

Dose

1000 mg

Target

25–500 mg

Form

—

Other Ingredients (2)

Ascorbyl PalmitateAntioxidant

Fat-soluble form of vitamin C used as preservative

Microcrystalline CelluloseBinder

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

How to Take It

Take it anytime

Take with food to blunt the flush at higher doses.

With food

On the label

Take one (1) capsule daily with meals, or as recommended by a healthcare practitioner.

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

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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.

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