---
title: "Niacin — £47K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/health-personal-care/niacin"
last_updated: "2026-07-31T13:14:42.463Z"
locale: en
meta:
description: "Niche score 43/100 · £47K/yr market · 46K searches/yr · £11.20 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 43/100 · £47K/yr market · 46K searches/yr · £11.20 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Niacin — £47K/yr Amazon UK Niche (2026) - Flapen"
---
# **niacin**
**Skip it**
A small market ($47K/yr) — this niche doesn't clear our bar today.
Market size 12Growth 16Conversion 84Competition 21Returns 99Price range 52Avg price 43Brand share 44Review moat 47Quality gap 55
**Returns**
**Incredible****0.1%**
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****4.4★**
avg incumbent rating — lower means beatable quality
**Price range**
**Good****£4.23–£26.71**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Review moat**
**Okay****1,796.77**
avg incumbent reviews — the moat a new listing must climb
**Brand share**
**Okay****79%**
top-5 brand share — brands hold most of the demand
**Avg price**
**Okay****£11.20**
avg listing price — sweet spot $15–$100
**Competition**
**Bad****75%**
top-5 click share — a locked-up shelf
**Growth**
**Bad****-17.4%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****£47K**
£47K/yr · 46K searches
According to Flapen's Amazon United Kingdom niche tracking, niacin is a £47K/yr Amazon United Kingdom market (46K searches/yr). The top 5 brands hold 79% of demand. Demand peaks in Aug–Sep–Oct–Nov. Verdict: Skip it — 43/100.
Data updated Jul 25, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **niacin market data**
- **Units sold / yr**
- **4K–5K**
- avg 250–500/product
- **Revenue / yr**
- **£45K–£56K**
- units × avg price
- **Conversion rate**
- **9.2%**
- **Avg BSR**
- **#29**
- **Page quality**
- **0%**
- **Prime**
- **92%**
- **Sponsored**
- **77%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **54 months**
- **Avg seller age**
- **165 days**
## **Competition & brand share**
The top 5 products capture 75% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**11 **—flat
**Sellers**
**14**
**Top-5 brand share**
**79%**
Top 20: 100%
**Top-5 click share**
**75%**
Top 20: 100%
**Open market**
**14%**
- Horbäach27% - MOBU23% - Bio Mirco11% - Health4All11% - NutriVolv8% - Nutricost7% - Open — no brand owns it (5 brands, 14%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -17.4% search growth over the last 90 days.
3K2KSpike '24Spike '25Black Friday '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Aug, Sep, Oct, Nov · busiest ÷ quietest = 2.2×
[**Open Trend **](https://flapen.com/research/uk/health-personal-care/niacin/trend)
## **Top niacin search terms**
- **niacin**36K/yr-17.9%7.9% conv. - **nicotinic acid**5K/yr-13.4%6.9% conv. - **niacin flush**3K/yr-25.9%10.5% conv. - **niacin b3**2K/yr-4.3%7.8% conv. [**All search terms **](https://flapen.com/research/uk/health-personal-care/niacin/search-terms)
## **Top niacin 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.
0%10%£5K20%£9K30%£14K40%£19K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 13 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Vitamin B3 Niacin 500mg | 90 Vegan Capsules (3 Months Supply) | Flush Free Nicotinamide Supplement (Niacinamide) | Resealable & Recyclable Pouch | by Horbaach**Horbäach**£7.15**4.4★829 rev](https://www.amazon.co.uk/dp/B094W4C54R) [2**Niacin 50mg 120 Tablets | Vitamin B3 Nicotinic Acid Flush Formula | Vegan UK Made | GMP Approved | MOBU (120)**MOBU**£7.38**4.3★454 rev](https://www.amazon.co.uk/dp/B09SYGZKS6) [3**Niacin Supplements with Flush Effect B3 Vitamin Supplement Nicotinic Acid B1 Thiamine ALA 120 Capsules Cognitive Function Cholesterol Heart & Energy 50mg Active Form (niacinamide alternative)**Bio Mirco**£19.18**4.4★88 rev](https://www.amazon.co.uk/dp/B0DNN9LG67) [4**Nutrivolv Niacin Supplement Tablets | 100mg | Flush Formula | Pure Nicotinic Acid | Reduces Fatigue | Supports Healthy Cholesterol | Vitamin B3 for Men & Women | Vegan | Halal | Kosher | 120 Tablets**NutriVolv**£6.60**4.2★169 rev](https://www.amazon.co.uk/dp/B0DM9B6ZMV) [5**Nutricost Vitamin B3 Niacinamide 500mg 240 Capsules - Gluten Free Non-GMO Soy Free No Niacin Flush Energy Boost Premium Quality**Nutricost**£13.09**4.6★18,743 rev](https://www.amazon.co.uk/dp/B01M9GIV8S)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Niacin Supplements with Flush Effect B3 Vitamin Supplement Nicotinic Acid B1 Thiamine ALA 120 Capsules Cognitive Function Cholesterol Heart & Energy 50mg Active Form (niacinamide alternative)**Bio Mirco**£19.18**88 rev1y ago](https://www.amazon.co.uk/dp/B0DNN9LG67) [**Vitamin B3 Niacinamide 500mg 180 Tablets - High Strength - Suitable for Vegans & Vegetarians - Made in UK**ARC) HEALTH+NUTRITION WWW.ARCHEALTHNUTRITION.CO.UK**£8.12**12 rev2y ago](https://www.amazon.co.uk/dp/B0D8LHQQY7) [**Vitamin B3 Niacin as Nicotinic Acid 50mg 120 Tablets Flush Effect**Health4All**£6.59**57 rev2y ago](https://www.amazon.co.uk/dp/B0D5Y7S3ZH) [**Vitamin B3 Niacin 100ml Liquid Supplements | 100% Pure & Natural Niacin 12.5mg | UK Made & Vegan Friendly | 4 Months Supply | UV Protected Miron Violet Glass | 10 Drops Daily**Epigenetics**£20.46**55 rev2y ago](https://www.amazon.co.uk/dp/B0CWB4D7SG) [**Niacin 50mg 120 Tablets | Vitamin B3 Nicotinic Acid Flush Formula | Vegan UK Made | GMP Approved | MOBU (120)**MOBU**£7.38**454 rev4y ago](https://www.amazon.co.uk/dp/B09SYGZKS6)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Vitamin B3 Nicotinamide 500mg per Tablet - 180 Tablets - 6 Months Supply**Health4All**£7.55**4.4★**▲ 145%**](https://www.amazon.co.uk/dp/B0BF4VT816) [**Vitamin B3 Niacinamide 500mg 180 Tablets - High Strength - Suitable for Vegans & Vegetarians - Made in UK**ARC) HEALTH+NUTRITION WWW.ARCHEALTHNUTRITION.CO.UK**£8.12**4.9★**▲ 29%**](https://www.amazon.co.uk/dp/B0D8LHQQY7) [**Vitamin B3 Niacin 500mg | 90 Vegan Capsules (3 Months Supply) | Flush Free Nicotinamide Supplement (Niacinamide) | Resealable & Recyclable Pouch | by Horbaach**Horbäach**£7.15**4.4★**▲ 20%**](https://www.amazon.co.uk/dp/B094W4C54R) [**Vitamin B3 Niacin as Nicotinic Acid 50mg 120 Tablets Flush Effect**Health4All**£6.59**4.3★**▲ 15%**](https://www.amazon.co.uk/dp/B0D5Y7S3ZH) [**Nutricost Vitamin B3 Niacinamide 500mg 240 Capsules - Gluten Free Non-GMO Soy Free No Niacin Flush Energy Boost Premium Quality**Nutricost**£13.09**4.6★**▲ 14%**](https://www.amazon.co.uk/dp/B01M9GIV8S)
**~~View all trending →~~**
## **What buyers say about niacin**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**22%
*“Bottles decent quality too — that Miron glass does feel like itll keep things fresh”*
**Value For Money**12%
*“Good price”*
**Vitamin**11%
*“Healthy vitamin”*
**Advertised Vs Actual Product**7%
*“Item description accuracy”*
**Energy Level**6%
*“my energy levels seem to have improved”*
**Ease Of Use**5%
*“easy to use”*
**Ease Of Chewing/Swallowing**4%
*“Easy to swallow or chew or even let the tablet dissolve in your mouth”*
**Heart Health**3%
*“Great for blood flow”*
**Dosage**3%
*“Its very easy to use with the glass pipette, making dosing simple and mess-free”*
**Ingredients-Overall**3%
*“The quality of the ingredients is excellent”*
### **What buyers complain about **
**Allergies**14%
*“There was I trying to work out what the hell Im suddenly allergic to”*
**Dosage**11%
*“Inconsistent Dose per tablet”*
**Side Effects**7%
*“Some tablets do nothing whilst others provide a very gentle effect”*
**Size-Overall**5%
*“Too big”*
**Color Fading/Discoloration**5%
*“have to say no change at all in skin colour”*
**Functionality-Overall**5%
*“Flush Effect can catch you out”*
**Taste-Overall**5%
*“Tasteless”*
**Bitter**3%
*“Very bitter and hard to swallow”*
**Regulates Digestion**2%
*“I always take following a meal as taking these on an empty stomach is a bad idea”*
**Ease Of Chewing/Swallowing**2%
*“Hard to swallow”*
### **Top return reasons **
**Advertised Vs Actual Product**57%
**Ease Of Chewing/Swallowing**29%
**Value For Money**14%
## **Common questions**
- **Is niacin profitable to sell on Amazon United Kingdom?**
- The niche generates £47K/yr across 13 tracked products. 90-day search growth is -17.4%. Flapen's verdict: Skip it (43/100).
- **How competitive is the niacin niche?**
- 11 brands and 14 sellers compete. The top 5 products take 75% of clicks and top 5 brands hold 79% of demand.
- **What do buyers complain about in niacin?**
- Top complaints mined from reviews: Allergies, Dosage, Side Effects. The return rate is 0.1%.
- **When does demand for niacin peak?**
- Demand peaks in Aug–Sep–Oct–Nov; the busiest month runs 2.2× the quietest.
- **What does it cost to enter the niacin niche?**
- Listings span £4.23–£26.71; the average listing price is £11.20 (sweet spot $15–$100). The average incumbent carries 1,797 reviews — the moat a new listing must climb.
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