Best Vitamin B3 (Niacin)
The best vitamin b3 (niacin) we track, ranked by real cost-per-dose — not paid placements. Across 43 brands, 2 are third-party tested in a public registry.
Updated October 2026prices checked what’s changed
How much does Vitamin B3 (Niacin) cost?
Vitamin B3 (Niacin) costs a median $0.13 per serving — the cheapest of the 90 we can price per dose is $0.03 per serving. Prices checked October 2026.
Best vitamin b3 (niacin) for a specific goal
Ranked across 85 products · prices checked Oct 10, 2026
3rd-party testedBulkSupplements.com Niacinamide Powder - Vitamin B3 Powder
NSF Certified for Sport brand at $0.04 per serving.
How we rank
We rank by cost-per-dose — price ÷ servings, normalized to the daily dose — so bottle sizes and strengths compare fairly. Prices are scraped at publication and re-checked when the catalog refreshes (see the “Prices checked” stamp above). There is no paid placement and no kickback for ordering. Full methodology · Editorial standards.
When cheapest ≠ best value
The cheapest bottle isn’t automatically the best value: a low per-bottle price usually just means fewer servings or a smaller dose per serving. That is exactly what cost per dose normalises, which is why the ranking above is ordered by it rather than by sticker price. A bigger bottle isn’t automatically cheaper per dose either — this list already ranks by cost per dose, so a larger count only wins if it truly costs less per serving. Compare Vitamin B3 (Niacin) forms.
Our data on this: how much the big bottle saves per serving · the gummy tax · the form premium · the price spread.
Full ranking by cost per dose
Cost-per-serving normalizes price across bottle sizes — a 60-count and a 365-count compare fairly. Top 20 of 85 shown.
- See offer$0.03per serving
- See offer$0.04per serving1.1× #1
- See offer#3BulkSupplements.com Niacinamide Powder - Vitamin B3…
powder · 500mg · 500 servings · $18.97
NSF Sport$0.04per serving1.1× #1 - See offer$0.04per serving1.1× #1
- See offer$0.04per serving1.2× #1
- See offer$0.04per serving1.3× #1
- See offer$0.04per serving1.3× #1
- See offer$0.04per serving1.3× #1
- See offer$0.05per serving1.5× #1
- See offer$0.05per serving1.5× #1
- See offer$0.05per serving1.5× #1
- See offer$0.05per serving1.6× #1
- See offer$0.05per serving1.6× #1
- See offer$0.06per serving1.7× #1
- See offer$0.06per serving1.7× #1
- See offer$0.06per serving1.8× #1
- See offer$0.06per serving1.9× #1
- See offer$0.06per serving1.9× #1
- See offer$0.06per serving1.9× #1
- See offer$0.06per serving1.9× #1
See also: Vitamin B3 (Niacin) basics · all best-value rankings · vitamin b3 (niacin) cost-per-dose breakdown
Vitamin B3 (Niacin) brands we compare — which are third-party tested?
2 of the 43 brands ranked above appear in an independent certifier's own public registry. A certification confirms the label matches the contents — it says nothing about how well the supplement works, and an uncertified brand is not automatically worse.
- BulkSupplements.com NSF Sport
- Thorne NSF Sport
- 21st Century
- Allergy Research Group
- aSquared Nutrition
- Best Naturals
- biophix
- BIOTICS RESEARCH
- Bluebonnet
- Carlyle
- DEAL SUPPLEMENT
- Doctor's Best
- Dr. Berg
- Dr. Valerie Nelson
- Endurance Products
- Genex Formulas
- GNC
- Heliocare
- Horbäach
- kindnature
- Micro Ingredients
- Natural Nutra
- Nature's Way
- Natures Craft
- NaturesPlus
- NEVISS
- Niacinex
- NOW Foods
- NusaPure
- Nutricost
- Piping Rock
- Pure Encapsulations
- Rugby
- Slo-Niacin
- Solaray
- Source Naturals
- Sundance
- SuperSmart USA LLC
- Swanson
- The Vitamin Shoppe
- Vital Nutrients
- Vitamatic
- Vykee Nutrition
Frequently asked
How much does Vitamin B3 (Niacin) cost?+
The cheapest vitamin b3 (niacin) we track is $0.03 per serving ($9.99 for 300 servings), against a typical $0.13 per serving across the 90 we can price per dose — about $1.00 a month at the cheapest. That's real cost per dose from live Amazon US prices as of October 2026, not the sticker price.
What is the best-value Vitamin B3 (Niacin) supplement?+
Piping Rock Niacin Supplement 100mg | 300 Tablets | Vitamin B3 for Men and Women… — $0.03 per serving ($9.99 for 300 servings), the lowest cost-per-dose vitamin b3 (niacin) in our Amazon US catalog as of October 2026.
How much does Vitamin B3 (Niacin) cost per day?+
The cheapest vitamin b3 (niacin) we track works out to $0.03 per serving, against a typical $0.13 per serving across the 90 we can price per dose. Retailers and review sites list a price and a serving size but rarely divide it out — this is what a day actually costs, as of October 2026.
What is the typical cost per dose for Vitamin B3 (Niacin)?+
About $0.13 per serving across the 90 vitamin b3 (niacin) products we can price per dose (combination products are left out — their single label dose belongs to whichever ingredient the product is built around) — the cheapest we track is $0.03 per serving, with most falling between $0.07 and $0.20.
What is the highest-quality Vitamin B3 (Niacin) supplement?+
Of the 43 vitamin b3 (niacin) brands ranked here, 2 hold a third-party certification we could verify in a public registry: BulkSupplements.com (NSF Certified for Sport), Thorne (NSF Certified for Sport). Certification means an independent lab confirmed the label matches the contents and screened for contaminants — it does not rate how well the supplement works. The cheapest certified option is BulkSupplements.com Niacinamide Powder - Vitamin B3 Powder at $0.04 per serving.
Which Vitamin B3 (Niacin) brands are third-party tested?+
BulkSupplements.com — NSF Certified for Sport; Thorne — NSF Certified for Sport. We only count a brand as tested when it appears in the certifier's own public registry (USP Verified, NSF Certified for Sport, Informed Choice), never on a claim printed on the label. The remaining 41 brands on this page have no certification we could verify.
Which Vitamin B3 (Niacin) is the top rated?+
We don't republish marketplace star ratings — they belong to the retailer, they move constantly, and a 4.6 average tells you nothing about what is in the capsule. The two things you can verify are what a dose costs and whether an independent lab checked the label. On both counts, BulkSupplements.com Niacinamide Powder - Vitamin B3 Powder stands out: NSF Certified for Sport certified at $0.04 per serving.
What dose of Vitamin B3 (Niacin) do these supplements come in?+
The vitamin b3 (niacin) products we track range from 5mg to 1000mg per serving. We rank by cost per serving so you can compare value across strengths — check the label for the dose that suits you.
Independent testing
2 of 43 tracked Vitamin B3 (Niacin) brands here are flagged as carrying independent third-party testing — a voluntary check of a product's identity, potency and contaminants by an outside lab. It's a quality signal, not a value or efficacy claim. Confirm any brand's current status on the official registries:
Testing status is self-reported by the brand or drawn from public certification and may change — always verify on the official registry before purchase.
References & sources
- Vitamin B3 (Niacin) — Health Professional fact sheet — NIH Office of Dietary Supplements
- USP Verified product participants — U.S. Pharmacopeia
- NSF certified products — NSF
We link primary sources and paraphrase their findings — never copy their text, tables, or images. Cost-per-dose figures are our own first-party catalog data.