---
title: "Dao Supplement — £197K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/health-personal-care/dao-supplement"
last_updated: "2026-07-31T09:45:13.852Z"
locale: en
meta:
description: "Niche score 53/100 · £197K/yr market · 79K searches/yr. Brand-locked demand (top 5 brands take 96% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 53/100 · £197K/yr market · 79K searches/yr. Brand-locked demand (top 5 brands take 96% of clicks) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Dao Supplement — £197K/yr Amazon UK Niche (2026) - Flapen"
---
# **dao supplement**
**Worth a look**
Shows low returns (0.1%), but brand-locked demand (top 5 brands take 96% of clicks) keeps it on the watch list.
Market size 39Growth 24Conversion 86Competition 22Returns 99Price range 95Avg price 95Brand share 10Review moat 74Quality gap 76
**Returns**
**Incredible****0.1%**
return rate — above 5% kills the launch gate
**Avg price**
**Incredible****£25.78**
avg listing price — sweet spot $15–$100
**Price range**
**Incredible****£15.78–£52.02**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Great****9.7%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Great****4.3★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Good****557.4**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Okay****£197K**
£197K/yr · 79K searches
**Growth**
**Bad****-2.7%**
90-day search growth — must beat 0% to launch
**Competition**
**Bad****74%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****96%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United Kingdom niche tracking, dao supplement is a £197K/yr Amazon United Kingdom market (79K searches/yr). The top 5 brands hold 96% of demand. Verdict: Worth a look — 53/100.
Data updated Jul 25, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **dao supplement market data**
- **Units sold / yr**
- **5K–6K**
- avg 250–500/product
- **Revenue / yr**
- **£129K–£155K**
- units × avg price
- **Conversion rate**
- **9.7%**
- **Avg BSR**
- **#94**
- **Page quality**
- **0%**
- **Prime**
- **90%**
- **Sponsored**
- **100%**
- **Out of stock**
- **8.2%**
- **Avg brand age**
- **66 months**
- **Avg seller age**
- **162 days**
## **Competition & brand share**
The top 5 products capture 74% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**6 **▲rising
**Sellers**
**10**
**Top-5 brand share**
**96%**
Top 20: 100%
**Top-5 click share**
**74%**
Top 20: 100%
**Open market**
**0%**
- NATURDAO37% - DR Healthcare35% - milDAO14% - designs for health5% - Aruanmogu5% - INTOLERAN4%
## **Demand & seasonality**
Weekly Amazon search volume, last 101 weeks — -2.7% search growth over the last 90 days.
2K1KSpike '25 seasonDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.4×
[**Open Trend **](https://flapen.com/research/uk/health-personal-care/dao-supplement/trend)
## **Top dao supplement search terms**
- **dao enzyme supplement**31K/yr-4.7%7.2% conv. - **dao**15K/yr+4.1%7.4% conv. - **dao enzyme**9K/yr-6.9%6.0% conv. - **dao supplements histamine**4K/yr+47.7%3.8% conv. - **diamine oxidase**6K/yr-10.7%3.3% conv. - **dao supplement**7K/yr-21.5%5.6% conv. - **dao supplements**5K/yr-12.4%3.7% conv. - **daosin**2K/yr-3.4%3.4% conv. [**All search terms **](https://flapen.com/research/uk/health-personal-care/dao-supplement/search-terms)
## **Top dao 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.
0%10%£20K20%£39K30%£59K40%£79K1101001K10K 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**DR Healthcare - DAOfood - DAO Enzyme - Supports the Balance of Dietary Histamine and DAO - Dispenser with 60 Gastro-Resistant DAO Mini-Tablets**DR Healthcare**£23.34**4.2★954 rev](https://www.amazon.co.uk/dp/B0773V74MV) [2**NATURDAO Plus DAO Enzyme 3 000 000 HDU per Day - Perfect Dosage with 1 000 000 HDU per Tablet (3 Tablets/Day) + 8 Co-Factors & Adjuvants Quercetin Catalase Vitamins Copper & Zinc**NATURDAO**£26.50**4.3★620 rev](https://www.amazon.co.uk/dp/B0CBQ7L6RP) [3**DR Healthcare - DAOfood Plus - DAO Enzyme - Quercetin and Vitamin C - Contributes to the Balance of Dietary Histamine - 60 Capsules with Gastro-Resistant DAO Mini-Tablets**DR Healthcare**£24.98**4.2★1,641 rev](https://www.amazon.co.uk/dp/B07T811PFT) [4**NATURDAO DAO Enzyme 3 000 000 HDU per Day - Perfect Dosage with 1 000 000 HDU per Tablet (1 to 3 Tablets/Day) - 100% DAO Vegan - 60 Tablets**NATURDAO**£26.52**4.1★1,877 rev](https://www.amazon.co.uk/dp/B07TV7JS32) [5**milDAO 30 Vegan Tablets | DAO Enzyme Supplement for Histamine Intolerance | Pure & High-Standard Halal-Certified | 1 000 000 HDU per Tablet | with Catalase | Foil Pouch for Maximum Stability**milDAO**£15.78**4.2★141 rev](https://www.amazon.co.uk/dp/B0F5WZMRL7)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**NaturDAO MAX DAO Enzyme Supplement 120 Tablets Adjustable Dosage Extended Release Histamine Blocker**NATURDAO**£19.21**22 rev2mo ago](https://www.amazon.co.uk/dp/B0GXWNNHQJ) [**Intoleran DAO Plus Digestive Enzymes - 50 Capsules | Supplement for Histamine Intolerance & DAO Deficiency | Healthy Histamine Levels | 30 000 HDU Diamine Oxidase (DAO) Enzyme | Vitamin C & Quercetin**INTOLERAN**£24.29**3 rev4mo ago](https://www.amazon.co.uk/dp/B0FR4WW1HC) [**DAO Supplements Histamine Blocker DAO Enzyme (Diamine Oxidase) & Vitamin C for Gut Health & Food Support 60 Servings**Aruanmogu**£22.46**18 rev8mo ago](https://www.amazon.co.uk/dp/B0G2CJ7SBS) [**Designs for Health HistaGest-DAO 60 Tablets**designs for health**£52.02**157 rev1y ago](https://www.amazon.co.uk/dp/B0BSWCCPF5) [**milDAO 30 Vegan Tablets | DAO Enzyme Supplement for Histamine Intolerance | Pure & High-Standard Halal-Certified | 1 000 000 HDU per Tablet | with Catalase | Foil Pouch for Maximum Stability**milDAO**£15.78**141 rev1y ago](https://www.amazon.co.uk/dp/B0F5WZMRL7)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**NaturDAO MAX DAO Enzyme Supplement 120 Tablets Adjustable Dosage Extended Release Histamine Blocker**NATURDAO**£19.21**4.4★**▲ 266%**](https://www.amazon.co.uk/dp/B0GXWNNHQJ) [**milDAO 60 Vegan Tablets | DAO Enzyme Supplement for Histamine Intolerance | Pure & High-Standard Halal-Certified | 1 000 000 HDU per Tablet | with Catalase | Foil Pouch for Maximum Stability**milDAO**£22.68**4.2★**▲ 73%**](https://www.amazon.co.uk/dp/B0DPX1TGF7) [**Intoleran DAO Plus Digestive Enzymes - 50 Capsules | Supplement for Histamine Intolerance & DAO Deficiency | Healthy Histamine Levels | 30 000 HDU Diamine Oxidase (DAO) Enzyme | Vitamin C & Quercetin**INTOLERAN**£24.29**5.0★**▲ 46%**](https://www.amazon.co.uk/dp/B0FR4WW1HC) [**Designs for Health HistaGest-DAO 60 Tablets**designs for health**£52.02**4.6★**▲ 27%**](https://www.amazon.co.uk/dp/B0BSWCCPF5) [**milDAO 30 Vegan Tablets | DAO Enzyme Supplement for Histamine Intolerance | Pure & High-Standard Halal-Certified | 1 000 000 HDU per Tablet | with Catalase | Foil Pouch for Maximum Stability**milDAO**£15.78**4.2★**▲ 17%**](https://www.amazon.co.uk/dp/B0F5WZMRL7)
**~~View all trending →~~**
## **What buyers say about dao supplement**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**13%
*“Amazing quality”*
**Regulates Digestion**10%
*“reduces bloating alot for main meals”*
**Value For Money**9%
*“It's very affordable”*
**Side Effects**6%
*“no side effects”*
**Allergies**6%
*“This product along with a low histamine diet would seem to have had a positive impact on my allergy”*
**Efficiency**5%
*“It works”*
**Vegan/Organic**5%
*“Vegan, gluten free and high strength”*
**Fever Relief**4%
*“Superb for histamine reactions”*
**Advertised Vs Actual Product**4%
*“do the job”*
**Dosage**4%
*“so I think this is a good introductory dose”*
### **What buyers complain about **
**Functionality-Overall**19%
*“Not doing the job”*
**Value For Money**13%
*“expensive”*
**Regulates Digestion**7%
*“Digestive enzymes”*
**Magnesium**7%
*“It contains maltodextrin”*
**Dosage**6%
*“Inaccurate Dosing”*
**Allergies**5%
*“So if you think this is for you because you have allergies”*
**Heart Health**3%
*“high heart rate”*
**Durability**3%
*“The dury is still out”*
**Ingredients-Overall**2%
*“The capsules are not huge, and as they also contain vitamin C and rice flour, it's obvious that the amount of Dehydrated Pea Sprout Powder in one capsule is negligible”*
**Vitamin**2%
*“I ordered this supplement knowing what I was getting but on further reflection I think it's not the best option or the best buy if you suffer from histamine intolerance which is a very specific issue and not one that relates to allergies”*
### **Top return reasons **
**Functionality-Overall**29%
**Joint Pain**14%
**Dosage**14%
**Fever Relief**12%
**Acid Regulator/Stomach Ache Relief**12%
**Pain Relief-Overall**7%
**Immunity Booster**7%
**Side Effects**5%
## **Common questions**
- **Is dao supplement profitable to sell on Amazon United Kingdom?**
- The niche generates £197K/yr across 10 tracked products. 0 of 3 products launched in the last 360 days are still selling. 90-day search growth is -2.7%. Flapen's verdict: Worth a look (53/100).
- **How competitive is the dao supplement niche?**
- 6 brands and 10 sellers compete. The top 5 products take 74% of clicks and top 5 brands hold 96% of demand.
- **What do buyers complain about in dao supplement?**
- Top complaints mined from reviews: Functionality-Overall, Value For Money, Regulates Digestion. The return rate is 0.1%.
- **When does demand for dao supplement peak?**
- Demand is steady year-round — the busiest month runs 1.4× the quietest.
- **What does it cost to enter the dao supplement niche?**
- Listings span £15.78–£52.02; the average listing price is £25.78 (sweet spot $15–$100). The average incumbent carries 557 reviews — the moat a new listing must climb.
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