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.

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.

Returns

Incredible0.1%

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

Great9.7%

search→purchase rate — share of searches ending in a sale

Quality gap

Great4.3★

avg incumbent rating — lower means beatable quality

Review moat

Good557.4

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

Bad74%

top-5 click share — a locked-up shelf

Brand share

Bad96%

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

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

Top-5 brand share

96%

Top 20: 100%

Top-5 click share

74%

Top 20: 100%

Open market

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.

No pronounced peak months · busiest ÷ quietest = 1.4×

Open Trend

Top dao supplement search terms

dao enzyme supplement31K/yr -4.7%7.2% conv.
dao15K/yr +4.1%7.4% conv.
dao enzyme9K/yr -6.9%6.0% conv.
dao supplements histamine4K/yr +47.7%3.8% conv.
diamine oxidase6K/yr -10.7%3.3% conv.
dao supplement7K/yr -21.5%5.6% conv.
dao supplements5K/yr -12.4%3.7% conv.
daosin2K/yr -3.4%3.4% conv.

All 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.

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

DR Healthcare - DAOfood - DAO Enzyme - Supports the Balance of Dietary Histamine and DAO - Dispenser with 60 Gastro-Resistant DAO Mini-Tablets

DR Healthcare£23.344.2★954 rev

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£26.504.3★620 rev

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£24.984.2★1,641 rev

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£26.524.1★1,877 rev

milDAO£15.784.2★141 rev

Newest

by launch date

NaturDAO MAX DAO Enzyme Supplement 120 Tablets Adjustable Dosage Extended Release Histamine Blocker

NATURDAO£19.2122 rev

2mo ago

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£24.293 rev

4mo ago

DAO Supplements Histamine Blocker DAO Enzyme (Diamine Oxidase) & Vitamin C for Gut Health & Food Support 60 Servings

Aruanmogu£22.4618 rev

8mo ago

Designs for Health HistaGest-DAO 60 Tablets

designs for health£52.02157 rev

1y ago

milDAO£15.78141 rev

1y ago

What buyers say about dao supplement

What buyers praise and complain about, mined from review topics.

What buyers love

Quality-Overall13%

“Amazing quality”

Regulates Digestion10%

“reduces bloating alot for main meals”

Value For Money9%

“It's very affordable”

Side Effects6%

“no side effects”

Allergies6%

“This product along with a low histamine diet would seem to have had a positive impact on my allergy”

Efficiency5%

“It works”

Vegan/Organic5%

“Vegan, gluten free and high strength”

Fever Relief4%

“Superb for histamine reactions”

Advertised Vs Actual Product4%

“do the job”

Dosage4%

“so I think this is a good introductory dose”

What buyers complain about

Functionality-Overall19%

“Not doing the job”

Value For Money13%

“expensive”

Regulates Digestion7%

“Digestive enzymes”

Magnesium7%

“It contains maltodextrin”

Dosage6%

“Inaccurate Dosing”

Allergies5%

“So if you think this is for you because you have allergies”

Heart Health3%

“high heart rate”

Durability3%

“The dury is still out”

Ingredients-Overall2%

“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”

Vitamin2%

“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-Overall29%

Joint Pain14%

Dosage14%

Fever Relief12%

Acid Regulator/Stomach Ache Relief12%

Pain Relief-Overall7%

Immunity Booster7%

Side Effects5%

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.