niacinamide supplement
Worth a lookShows low returns (0.0%), but a concentrated shelf (top 5 take 79% of clicks) keeps it on the watch list.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Conversion
Incredible13.7%search→purchase rate — share of searches ending in a sale
Market size
Great$947K$947K/yr · 467K searches
Avg price
Good$14.82avg listing price — sweet spot $15–$100
Price range
Good$5.25–$25.01cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Okay86%top-5 brand share — brands hold most of the demand
Review moat
Bad4,241avg incumbent reviews — the moat a new listing must climb
Growth
Bad-1.2%90-day search growth — must beat 0% to launch
Quality gap
Bad4.6★avg incumbent rating — lower means beatable quality
Competition
Bad79%top-5 click share — a locked-up shelf
According to Flapen's Amazon United States niche tracking, niacinamide supplement is a $947K/yr Amazon United States market (467K searches/yr). The top 5 brands hold 86% of demand. Demand peaks in Nov. Verdict: Worth a look — 50/100.
Data updated Jul 28, 2026 · scored weekly · How we score niches
niacinamide supplement market data
- Units sold / yr
- 60K–80K
- avg 6,000–8,000/product
- Revenue / yr
- $889K–$1.2M
- units × avg price
- Conversion rate
- 13.7%
- Avg BSR
- #238
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 67%
- Out of stock
- 0.0%
- Avg brand age
- 71 months
- Avg seller age
- 148 days
Competition & brand share
The top 5 products capture 79% of clicks — a locked-up shelf that new listings rarely crack.Brands
10 flat
Sellers
73
Top-5 brand share
86%
Top 20: 100%
Top-5 click share
79%
Top 20: 100%
Open market
10%
- Nutricost42%
- NOW Foods21%
- 21st Century9%
- THORNE9%
- Pure Encapsulations5%
- Micro Ingredients4%
- Open — no brand owns it (4 brands, 10%)
Demand & seasonality
Weekly Amazon search volume, last 100 weeks — -1.2% search growth over the last 90 days.Peak months: Nov · busiest ÷ quietest = 5.2×
Top niacinamide supplement search terms
- niacinamide 500mg151K/yr
- b3 niacinamide69K/yr
- vitamin b3 niacinamide73K/yr
- niacinamide supplement81K/yr
- vitamina b3 niacinamida15K/yr
- niacinamide vitamin b313K/yr
- niacinamide b310K/yr
- now niacinamide 500mg7K/yr
- niacinamide 500 mg7K/yr
- niacinamide for dogs5K/yr
Top niacinamide supplement products on Amazon
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 12 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Nutricost Niacinamide (Vitamin B3) 500mg 240 Capsules Flush Free
Nutricost$14.724.6★20,032 rev
NOW Foods Supplements Niacinamide (Vitamin B-3) 500 mg Energy Production* 100 Veg Capsules
NOW Foods$7.454.6★729 rev
21st Century Niacinamide 500 mg Prolonged Release Tablets 110 Count
21st Century$5.254.6★5,472 rev
THORNE - Niacinamide - Non-Flushing Form of Vitamin B3 - Supports Skin Health & Provides Cellular Protection* - Niacin Supplement - Third-Party Certified - Gluten Dairy & Soy-Free - 180 Capsules
THORNE$25.014.6★2,068 rev
NOW Foods Niacinamide (Vitamin B-3) 500 mg Energy Production* 250 Veg Capsules
NOW Foods$19.354.7★1,097 rev
Newest
by launch date
Vitamatic Niacinamide 500 mg 240 Tablets - Flush Free Vitamin B3 - Supports Energy Production
Vitamatic$12.65291 rev
NOW Foods Niacinamide (Vitamin B-3) 500 mg Energy Production* 250 Veg Capsules
NOW Foods$19.351,097 rev
Vitamin B3 Nicotinamide 1 000mg Per Serving 500 Capsules Flush Free Niacin Essential B3 Supports Healthy Skin & Energy Production Non-GMO
DEAL SUPPLEMENT$20.371,008 rev
Vitamin B3 Niacinamide 500mg Per Capsule 400 Capsules | 1 000mg Flush Free Niacin Per Serving Essential B Vitamin Supplement | Non-GMO Gluten Free
Micro Ingredients$18.681,539 rev
Nutricost Niacinamide (Vitamin B3) 500mg 240 Capsules Flush Free
Nutricost$14.7220,032 rev
Trending
90-day click momentumNOW Foods Niacinamide (Vitamin B-3) 500 mg Energy Production* 250 Veg Capsules
NOW Foods$19.354.7★
NOW Foods Supplements Niacinamide (Vitamin B-3) 500 mg Energy Production* 100 Veg Capsules
NOW Foods$7.454.6★
Vitamatic Niacinamide 500 mg 240 Tablets - Flush Free Vitamin B3 - Supports Energy Production
Vitamatic$12.654.6★
Natures Bounty Niacin 500mg Flush Free Cellular Energy Support Supports Nervous System Health 120 Capsules
Nature's Bounty$15.824.7★
THORNE - Niacinamide - Non-Flushing Form of Vitamin B3 - Supports Skin Health & Provides Cellular Protection* - Niacin Supplement - Third-Party Certified - Gluten Dairy & Soy-Free - 180 Capsules
THORNE$25.014.6★
What buyers say about niacinamide supplement
What buyers praise and complain about, mined from review topics.What buyers love
“Reliable Quality and Easy to Take”
“Economical”
“This vitamin works...for me”
“As advertised”
“great for your skin”
“Seems to have a positive effect”
“easy to use”
“I have more energy”
“Food supplement”
“It helps me to sleep”
What buyers complain about
“It caused one side effect, Diarrhea”
“Allergic to it”
“Too high of doage for the average person”
“This product didnt work for me”
“Required for better cholesterol regulation”
“Vitamin B3. Took for a month and half”
“Made me ill”
“I am usually always very tired”
“All the capsules have brown and black spots; they aren't good”
“I feel it now in my sinuses”
Top return reasons
Common questions
- Is niacinamide supplement profitable to sell on Amazon United States?
- The niche generates $947K/yr across 12 tracked products. 90-day search growth is -1.2%. Flapen's verdict: Worth a look (50/100).
- How competitive is the niacinamide supplement niche?
- 10 brands and 73 sellers compete. The top 5 products take 79% of clicks and top 5 brands hold 86% of demand.
- What do buyers complain about in niacinamide supplement?
- Top complaints mined from reviews: Side Effects, Allergies, Dosage. The return rate is 0.0%.
- When does demand for niacinamide supplement peak?
- Demand peaks in Nov; the busiest month runs 5.2× the quietest.
- What does it cost to enter the niacinamide supplement niche?
- Listings span $5.25–$25.01; the average listing price is $14.82 (sweet spot $15–$100). The average incumbent carries 4,241 reviews — the moat a new listing must climb.