---
title: "Dao Enzyme Supplements — $2.8M/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/dao-enzyme-supplements"
last_updated: "2026-08-06T05:20:14.410Z"
locale: en
meta:
description: "Niche score 69/100 · $2.8M/yr market · 902K searches/yr · $36.72 avg price. Clears our launch bar. Data updated Jul 2026."
"og:description": "Niche score 69/100 · $2.8M/yr market · 902K searches/yr · $36.72 avg price. Clears our launch bar. Data updated Jul 2026."
"og:title": "Dao Enzyme Supplements — $2.8M/yr Amazon US Niche (2026) - Flapen"
---
# **dao enzyme supplements**
**Launch it**
A $2.8M/yr market growing +4.7% this quarter with returns at 0.0% — clears our launch bar.
Market size 96Growth 31Conversion 81Competition 46Returns 100Price range 95Avg price 95Brand share 56Review moat 66Quality gap 65
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Market size**
**Incredible****$2.8M**
$2.8M/yr · 902K searches
**Avg price**
**Incredible****$36.72**
avg listing price — sweet spot $15–$100
**Price range**
**Incredible****$16.54–$85.94**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Great****8.5%**
search→purchase rate — share of searches ending in a sale
**Review moat**
**Good****864**
avg incumbent reviews — the moat a new listing must climb
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Good****71%**
top-5 brand share — brands hold most of the demand
**Competition**
**Okay****57%**
top-5 click share — leaders hold, buyers still browse
**Growth**
**Okay****+4.7%**
90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, dao enzyme supplements is a $2.8M/yr Amazon United States market (902K searches/yr). The top 5 brands hold 71% of demand. Demand peaks in Apr–May. Verdict: Launch it — 69/100.
Data updated Jul 26, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **dao enzyme supplements market data**
- **Units sold / yr**
- **60K–80K**
- avg 2,000–2,500/product
- **Revenue / yr**
- **$2.2M–$2.9M**
- units × avg price
- **Conversion rate**
- **8.5%**
- **Avg BSR**
- **#200**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **100%**
- **Out of stock**
- **3.5%**
- **Avg brand age**
- **90 months**
- **Avg seller age**
- **154 days**
## **Competition & brand share**
The top 5 products take 57% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**17 **▼falling
**Sellers**
**27**
**Top-5 brand share**
**71%**
Top 20: 100%
**Top-5 click share**
**57%**
Top 20: 98%
**Open market**
**23%**
- SOLARAY24% - Seeking Health16% - Life Extension11% - NATURDAOCOM LEGUMACTIVE11% - Pure Encapsulations10% - NATURDAO6%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +4.7% search growth over the last 90 days.
23K18KSpike '25 seasonSepDecMarJunAugNovMarMay
Peak months: Apr, May · busiest ÷ quietest = 1.6×
[**Open Trend **](https://flapen.com/research/us/health-household/dao-enzyme-supplements/trend)
## **Top dao enzyme supplements search terms**
- **dao enzyme**285K/yr+11.0%8.3% conv. - **dao supplements histamine blocker**129K/yr-2.9%8.3% conv. - **dao**122K/yr+5.4%6.9% conv. - **histamine blocker**54K/yr+5.0%2.8% conv. - **dao enzyme supplements**49K/yr+2.8%6.7% conv. - **dao supplement**46K/yr-3.1%4.9% conv. - **histamine**29K/yr+15.3%1.1% conv. - **naturdao**22K/yr+35.1%11.4% conv. - **doa enzyme**16K/yr+15.2%8.5% conv. - **histamine digest**42K/yr-21.7%7.0% conv. [**All search terms **](https://flapen.com/research/us/health-household/dao-enzyme-supplements/search-terms)
## **Top dao enzyme supplements 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%$282K20%$563K30%$845K40%$1.1M1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 22 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**SOLARAY DAO Enzyme - Digestive Enzyme that Breaks Down Histamine - 60 000 HDU - Digestive Enzymes - Vegan Gluten Free Lab Verified - 30 Servings 30 VegCaps**SOLARAY**$21.93**4.3★323 rev](https://www.amazon.com/dp/B0DJ9ZXKG9) [2**Life Extension Food Sensitivity Relief with Diamine Oxidase (DAO) Occasional Gas Digestive Comfort histamine Sensitivity DAO Enzyme Supplement Gluten Free Non-GMO Vegetarian 60 Capsules**Life Extension**$25.94**4.5★401 rev](https://www.amazon.com/dp/B0DKFY651C) [3**NATURDAO DAO enzyme 1 000 000 HDU per tablet - DAO Enzyme Supplement - Histamine Block - Diamine Oxidase - Food Intolerance - 60 Extended Release Tablets**NATURDAOCOM LEGUMACTIVE**$39.51**4.3★1,261 rev](https://www.amazon.com/dp/B08R5ZVG4L) [4**Seeking Health DAO Enzyme - Formerly Histamine Digest DAO Enzyme Supplement for Histamine Food Intolerance Supports Digestive Health Upset Stomach (90 Capsules)***Seeking Health**$85.94**4.3★2,225 rev](https://www.amazon.com/dp/B07JGW1DCR) [5**Pure Encapsulations DAO Enzyme - Histamine Breakdown Digestion Support Supplement* - Ease Digestive Discomfort & Skin Sensitivity* - Allergen-Free Health Supplement - 60 Capsules**Pure Encapsulations**$48.46**4.4★96 rev](https://www.amazon.com/dp/B0F39X6ZPL)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**NATURDAO MAX DAO Enzyme Supplement 120 Tablets 50 000 HDU per Tablet Adjustable Dosage Extended Release Histamine Blocker**NATURDAO**$23.45**42 rev3mo ago](https://www.amazon.com/dp/B0GV11RRLC) [**KUAFLY DAO Supplements Histamine Blocker DAO Enzyme + Diamine Oxidase & Quercetin Immortelle Vitamin C for Gut Health and Food Support 60 Capsules**KUAFLY**$17.98**63 rev4mo ago](https://www.amazon.com/dp/B0FTRLD5HY) [**Hekeauo DAO Enzyme DAO Supplements Histamine Blocker for Women & Men Digestive Enzymes Diamine Oxidase 30 000 HDU for Food s& Histamine Support 60 Capsules**Hekeauo**$17.88**8 rev4mo ago](https://www.amazon.com/dp/B0GSVKH58F) [**GREAT BILLIOM DAO Enzyme (Diamine Oxidase) - Digestive Enzymes for Women & Men - 30 000 HDU - Gut Health Supplements - Digestive Health Histamine Support - Enzymes for Digestion - 60 Capsules**GREAT BILLIOM**$19.22**92 rev9mo ago](https://www.amazon.com/dp/B0FVT2YB42) [**Vellur Histamine Protect DAO Enzyme Supplement 60 Capsules**Velluré**$18.38**69 rev9mo ago](https://www.amazon.com/dp/B0FV98QVR8)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Hekeauo DAO Enzyme DAO Supplements Histamine Blocker for Women & Men Digestive Enzymes Diamine Oxidase 30 000 HDU for Food s& Histamine Support 60 Capsules**Hekeauo**$17.88**3.8★**▲ 215%**](https://www.amazon.com/dp/B0GSVKH58F) [**NATURDAO MAX DAO Enzyme Supplement 120 Tablets 50 000 HDU per Tablet Adjustable Dosage Extended Release Histamine Blocker**NATURDAO**$23.45**4.2★**▲ 215%**](https://www.amazon.com/dp/B0GV11RRLC) [**SOLARAY DAO Enzyme - Breaks Down Histamine - 60 000 HDU - Vegan Gluten Free Lab Verified - 90 Servings 90 VegCaps**SOLARAY**$48.94**4.3★**▲ 62%**](https://www.amazon.com/dp/B0FCWTKTMW) [**Medagel HISTAsolv Extra Strength DAO Enzyme Supplement for Histamine Food Intolerance - Eases Digestive Discomfort - Patented Tech - Made in Austria - 60 Tablets**Medagel**$39.86**4.4★**▲ 58%**](https://www.amazon.com/dp/B0D84BQ4GD) [**SOLARAY DAO Enzyme - Digestive Enzyme that Breaks Down Histamine - 60 000 HDU - Digestive Enzymes - Vegan Gluten Free Lab Verified - 30 Servings 30 VegCaps**SOLARAY**$21.93**4.3★**▲ 52%**](https://www.amazon.com/dp/B0DJ9ZXKG9)
**~~View all trending →~~**
## **What buyers say about dao enzyme supplements**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**10%
*“Huge improvement to my quality of life”*
**Efficiency**9%
*“Seems to work ok”*
**Regulates Digestion**8%
*“Effective digestive aid”*
**Fever Relief**7%
*“It helps my histamine intolerance”*
**Value For Money**7%
*“Good value for the money”*
**Allergies**6%
*“This really helps me with my allergies”*
**Immunity Booster**5%
*“overall immune support”*
**Acid Regulator/Stomach Ache Relief**3%
*“NO stomach pain”*
**Side Effects**3%
*“it did not give me any adverse reaction”*
**Vitamin**3%
*“Great supplement”*
### **What buyers complain about **
**Allergies**13%
*“Been having issues with rashes”*
**Functionality-Overall**11%
*“Not effective”*
**Value For Money**9%
*“Too expensive”*
**Acid Regulator/Stomach Ache Relief**5%
*“I sometimes experience bloating”*
**Dosage**5%
*“I was hoping this would be better because of the higher dose”*
**Side Effects**5%
*“Side effects”*
**Vegan/Organic**3%
*“And it will not work in the vegetarian capsule as it needs to be in a delayed release capsule with an enteric coating so it does not breakdown quickly like vegetarian capsules do”*
**Nutritional Content**2%
*“and would not be able to eat many food items without this product”*
**Heart Health**2%
*“and it gave me heartburn”*
**Regulates Digestion**2%
*“I haven't noticed a strong effect on digestion in day-to-day use”*
### **Top return reasons **
**Advertised Vs Actual Product**29%
**Functionality-Overall**14%
**Ingredients-Overall**14%
**Ease Of Use**7%
**Acid Regulator/Stomach Ache Relief**7%
**Stale/Rotten/Spoiled**7%
**Smell**7%
**Certifications**7%
**Itch Relief**7%
## **Common questions**
- **Is dao enzyme supplements profitable to sell on Amazon United States?**
- The niche generates $2.8M/yr across 22 tracked products. 5 of 5 products launched in the last 360 days are still selling. 90-day search growth is +4.7%. Flapen's verdict: Launch it (69/100).
- **How competitive is the dao enzyme supplements niche?**
- 17 brands and 27 sellers compete. The top 5 products take 57% of clicks and top 5 brands hold 71% of demand.
- **What do buyers complain about in dao enzyme supplements?**
- Top complaints mined from reviews: Allergies, Functionality-Overall, Value For Money. The return rate is 0.0%.
- **When does demand for dao enzyme supplements peak?**
- Demand peaks in Apr–May; the busiest month runs 1.6× the quietest.
- **What does it cost to enter the dao enzyme supplements niche?**
- Listings span $16.54–$85.94; the average listing price is $36.72 (sweet spot $15–$100). The average incumbent carries 864 reviews — the moat a new listing must climb.
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