---
title: "Niacin Flush — $4K/mo Amazon US Product Research (2026)"
canonical_url: "https://flapen.com/research/us/health-household/niacin-flush"
last_updated: "2026-08-12T07:04:09.501Z"
locale: en
meta:
description: "Amazon product research for niacin flush: $4K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:description": "Amazon product research for niacin flush: $4K/mo market, demand, competition, pricing, reviews & the verdict. Know if it's worth selling — Flapen."
"og:title": "Niacin Flush — $4K/mo Amazon US Product Research (2026)"
---
# **Niacin Flush**
**Skip it**
A concentrated shelf (top 5 take 86% of clicks) — this niche doesn't clear our bar today.
Market size 13Growth 22Conversion 84Competition 12Returns 100Price range 41Avg price 70Brand share 15Review moat 29Quality gap 72
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Conversion**
**Great****9.2%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Good****4.3★**
avg incumbent rating — lower means beatable quality
**Avg price**
**Good****$14.38**
avg listing price — sweet spot $15–$100
**Price range**
**Okay****$7.72–$19.98**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Review moat**
**Okay****3,553.7**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Bad****-6.7%**
90-day search growth — must beat 0% to launch
**Brand share**
**Bad****94%**
top-5 brand share — brand-locked demand
**Market size**
**Bad****$53K**
$53K/yr · 40K searches
**Competition**
**Bad****86%**
top-5 click share — a locked-up shelf
## **Is niacin flush profitable on Amazon?**
According to Flapen's Amazon United States niche tracking, niacin flush is a $53K/yr Amazon United States market (40K searches/yr). The top 5 brands hold 94% of demand. Verdict: Skip it — 41/100.
Data updated Jul 28, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **niacin flush market size & sales**
Units sold, revenue, conversion and listing quality across the tracked shelf.
- **Units sold / yr**
- **3K–4K**
- avg 250–500/product
- **Revenue / yr**
- **$43K–$58K**
- units × avg price
- **Conversion rate**
- **9.2%**
- **Avg BSR**
- **#464**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **70%**
- **Out of stock**
- **9.1%**
- **Avg brand age**
- **127 months**
- **Avg seller age**
- **177 days**
## **Competition: brands, sellers & click share**
The top 5 products capture 86% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**7 **—flat
**Sellers**
**49**
**Top-5 brand share**
**94%**
Top 20: 100%
**Top-5 click share**
**86%**
Top 20: 100%
**Open market**
**3%**
- Nutricost58% - Dr. Berg Nutritionals13% - Horbäach10% - BulkSupplements7% - NOW Foods6% - Nature's Bounty3% - Open — no brand owns it (1 brand, 3%)
## **niacin flush demand & seasonality**
Weekly Amazon search volume, last 102 weeks — -6.7% search growth over the last 90 days.
1K750Spike '25 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.3×
[**Open Trend **](https://flapen.com/research/us/health-household/niacin-flush/trend)
## **Top niacin flush search terms shoppers use**
The exact queries shoppers type, with yearly volume, growth and conversion.
- **niacin flush**20K/yr-8.6%5.9% conv. - **niacin with flush**6K/yr-13.8%9.3% conv. - **flushing niacin**5K/yr-6.9%11.4% conv. - **flush niacin**4K/yr+29.6%6.7% conv. - **niacin flushing**3K/yr-10.7%11.6% conv. - **niacin with flushing**2K/yr-10.3%10.8% conv. - **niacin 500mg flush**1K/yr-6.2%10.3% conv. [**All search terms **](https://flapen.com/research/us/health-household/niacin-flush/search-terms)
## **Top niacin flush products & what they sell for**
Every tracked product — its share of the shelf, its review moat, and what it sells for.
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%10%$5K20%$11K30%$16K40%$21K1001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 10 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Nutricost Niacin (Vitamin B3) 500mg 240 Capsules with Flushing GMO-Free**Nutricost**$14.88**4.2★9,951 rev](https://www.amazon.com/dp/B01IIDB6JE) [2**Nutricost Niacin (Vitamin B3) 100mg 240 Capsules with Flushing**Nutricost**$11.94**4.5★2,737 rev](https://www.amazon.com/dp/B08WYVC3ZH) [3**Dr. Berg Highly-Potent Niacin 500 mg Now Only 125 mg per Capsule for Niacin Flush Tolerance Building Gradually Increase to 500mg a Day Vitamin B3 for Heart Brain & Energy Support 100 Capsules**Dr. Berg Nutritionals**$19.98**4.5★294 rev](https://www.amazon.com/dp/B0F6DJJB7Y) [4**Horbach Niacin | Vitamin B3 500mg | 100 Capsules | with Flushing**Horbäach**$8.48**4.0★1,244 rev](https://www.amazon.com/dp/B07M5HTYYY) [5**BulkSupplements.com Niacin Powder - Vitamin B3 Supplement Niacin Flush - Gluten Free 500mg per Serving 250g (8.8 oz) (Pack of 1)**BulkSupplements**$16.09**4.4★1,808 rev](https://www.amazon.com/dp/B00ENRG3XY)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Dr. Berg Highly-Potent Niacin 500 mg Now Only 125 mg per Capsule for Niacin Flush Tolerance Building Gradually Increase to 500mg a Day Vitamin B3 for Heart Brain & Energy Support 100 Capsules**Dr. Berg Nutritionals**$19.98**294 rev1y ago](https://www.amazon.com/dp/B0F6DJJB7Y) [**BulkSupplements.com Niacin Capsules - Niacin Supplement Vitamin B3 - Gluten Free 1 Capsule per Serving 365 Capsules (Pack of 1)**BulkSupplements**$18.54**448 rev3y ago](https://www.amazon.com/dp/B0BB8HRSM6) [**Nutricost Niacin (Vitamin B3) 100mg 240 Capsules with Flushing**Nutricost**$11.94**2,737 rev5y ago](https://www.amazon.com/dp/B08WYVC3ZH) [**Horbach Niacin | Vitamin B3 500mg | 100 Capsules | with Flushing**Horbäach**$8.48**1,244 rev7y ago](https://www.amazon.com/dp/B07M5HTYYY) [**Nutricost Niacin (Vitamin B3) 500mg 240 Capsules with Flushing GMO-Free**Nutricost**$14.88**9,951 rev10y ago](https://www.amazon.com/dp/B01IIDB6JE)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Horbach Niacin | Vitamin B3 500mg | 100 Capsules | with Flushing**Horbäach**$8.48**4.0★**▲ 35%**](https://www.amazon.com/dp/B07M5HTYYY) [**Dr. Berg Highly-Potent Niacin 500 mg Now Only 125 mg per Capsule for Niacin Flush Tolerance Building Gradually Increase to 500mg a Day Vitamin B3 for Heart Brain & Energy Support 100 Capsules**Dr. Berg Nutritionals**$19.98**4.5★**▲ 11%**](https://www.amazon.com/dp/B0F6DJJB7Y) [**Natures Bounty Niacin 500mg Flush Free Cellular Energy Support Supports Nervous System Health 120 Capsules**Nature's Bounty**$15.82**4.7★**— 3%**](https://www.amazon.com/dp/B001V9N4KW) [**NOW Foods Supplements Niacin (Vitamin B-3) 500 mg Sustained Release Nutritional Health 250 Tablets**NOW Foods**$14.06**4.3★**— 2%**](https://www.amazon.com/dp/B00028LV8K) [**Nutricost Niacin (Vitamin B3) 100mg 240 Capsules with Flushing**Nutricost**$11.94**4.5★**— 1%**](https://www.amazon.com/dp/B08WYVC3ZH)
**~~View all trending →~~**
## **What reviews say buyers love and hate about niacin flush**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**26%
*“Excellent product”*
**Advertised Vs Actual Product**13%
*“As advertised”*
**Value For Money**7%
*“Reasonable price”*
**Efficiency**6%
*“effective”*
**Vitamin**5%
*“Great choice for vitamins”*
**Heart Health**4%
*“Great supplement for controlling your cholesterol”*
**Ease Of Chewing/Swallowing**3%
*“The capsules are easy to take”*
**Side Effects**2%
*“had no reaction at all”*
**Nutritional Content**2%
*“I guess I'm getting the nutrient benefits of the Niacin but”*
**Dosage**2%
*“Dosage of 100mg is a good start”*
### **What buyers complain about **
**Allergies**32%
*“Allergic Reaction”*
**Side Effects**15%
*“The side effects are horrible”*
**Dosage**8%
*“This dose is just too high for me”*
**Skin Health**5%
*“My skin burned”*
**Vitamin**3%
*“If youre new to supplementing niacin do not buy this”*
**Functionality-Overall**3%
*“Not work”*
**Quality-Overall**2%
*“Inferior Quality”*
**Heating**2%
*“Broke out in hives and got flush and very hot”*
**Itch Relief**2%
*“Well, for me, I break out into an itch really bad”*
**Value For Money**2%
*“A very costly mistake”*
### **Top return reasons **
**Side Effects**20%
**Dosage**20%
**Functionality-Overall**10%
**Product Condition**10%
**Size-Overall**10%
**Value For Money**10%
**Vitamin**10%
**Calcium**10%
## **Common niacin flush questions**
- **Is niacin flush profitable to sell on Amazon United States?**
- The niche generates $53K/yr across 10 tracked products. 90-day search growth is -6.7%. Flapen's verdict: Skip it (41/100).
- **How competitive is the niacin flush niche?**
- 7 brands and 49 sellers compete. The top 5 products take 86% of clicks and top 5 brands hold 94% of demand.
- **What do buyers complain about in niacin flush?**
- Top complaints mined from reviews: Allergies, Side Effects, Dosage. The return rate is 0.0%.
- **When does demand for niacin flush peak?**
- Demand is steady year-round — the busiest month runs 1.3× the quietest.
- **What does it cost to enter the niacin flush niche?**
- Listings span $7.72–$19.98; the average listing price is $14.38 (sweet spot $15–$100). The average incumbent carries 3,554 reviews — the moat a new listing must climb.
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