Histamine Digest
Worth a lookShows low returns (0.0%), but brand-locked demand (top 5 brands take 100% of clicks) keeps it on the watch list.
Returns
Incredible0.0%return rate — above 5% kills the launch gate
Conversion
Incredible13.4%search→purchase rate — share of searches ending in a sale
Avg price
Incredible$45.81avg listing price — sweet spot $15–$100
Price range
Incredible$21.93–$85.94cheapest to priciest tracked listing — scored on the share inside $15–$100
Market size
Great$968K$968K/yr · 158K searches
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Review moat
Good1,132.29avg incumbent reviews — the moat a new listing must climb
Growth
Bad-6.8%90-day search growth — must beat 0% to launch
Competition
Bad91%top-5 click share — a locked-up shelf
Brand share
Bad100%top-5 brand share — brand-locked demand
Is histamine digest profitable on Amazon?
According to Flapen's Amazon United States niche tracking, histamine digest is a $968K/yr Amazon United States market (158K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Jun–Jul. Verdict: Worth a look — 54/100.
Data updated Jul 26, 2026 · scored weekly · How we score niches
histamine digest market size & sales
Units sold, revenue, conversion and listing quality across the tracked shelf.- Units sold / yr
- 15K–20K
- avg 2,000–2,500/product
- Revenue / yr
- $687K–$916K
- units × avg price
- Conversion rate
- 13.4%
- Avg BSR
- #289
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 100%
- Out of stock
- 0.0%
- Avg brand age
- 84 months
- Avg seller age
- 158 days
Competition: brands, sellers & click share
The top 5 products capture 91% of clicks — a locked-up shelf that new listings rarely crack.Brands
4 rising
Sellers
13
Top-5 brand share
100%
Top 20: 100%
Top-5 click share
91%
Top 20: 100%
Open market
0%
- Seeking Health86%
- VitaMonk5%
- Omne Diem5%
- SOLARAY4%
histamine digest demand & seasonality
Weekly Amazon search volume, last 104 weeks — -6.8% search growth over the last 90 days.Peak months: Jun, Jul · busiest ÷ quietest = 2.0×
Top histamine digest search terms shoppers use
The exact queries shoppers type, with yearly volume, growth and conversion.- histamine digest42K/yr
- seeking health dao enzyme12K/yr
- seeking health probiota histaminx12K/yr
- low histamine probiotics15K/yr
- probiota histaminx11K/yr
- histaminx11K/yr
- probiota histamin x10K/yr
- histamine probiotic8K/yr
- seeking health dao7K/yr
- histamine x8K/yr
Top histamine digest 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.
All 7 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Seeking Health ProBiota HistaminX - Digestion Supplement for Gut Health Support - Support Histamine with Lactobacillus Plantarum & Lactobacillus Salivarius - Support Immune & Skin Health - 60 Capsules
Seeking Health$40.394.4★1,342 rev
Seeking Health DAO Enzyme - Formerly Histamine Digest DAO Enzyme Supplement for Histamine Food Intolerance Supports Digestive Health Upset Stomach (90 Capsules)*
Seeking Health$85.944.3★2,225 rev
Seeking Health DAO Enzyme - Formerly Histamine Digest DAO Enzyme Supplement for Histamine Food Intolerance Supports Digestive Health Upset Stomach (30 Capsules)*
Seeking Health$38.474.3★2,225 rev
Seeking Health HistaminX - Supplement with Bromelain & Flavonoids - Formula Aids Healthy Swelling Responses & Seasonal Comfort - Support Immune System with Antioxidants - 60 Capsules
Seeking Health$44.674.6★246 rev
VitaMonk Low Histamine Probiotics Fight Histamine Intolerance and Support Balanced Gut Health - Histamine Free Probiotic for Those Seeking Health Improvements with Histamine Control -60 Capsules
VitaMonk$34.624.3★631 rev
Newest
by launch date
SOLARAY DAO Enzyme - Digestive Enzyme that Breaks Down Histamine - 60 000 HDU - Digestive Enzymes - Vegan Gluten Free Lab Verified - 30 Servings 30 VegCaps
SOLARAY$21.93323 rev
Omne Diem DAO 30 000 HDU - 60 Caps - Histamine Neutralizing Enzyme - Relieve Histamine Intolerance with Diamine Oxidase - The Original Tested DAO Enzyme Supplement
Omne Diem$54.65934 rev
VitaMonk Low Histamine Probiotics Fight Histamine Intolerance and Support Balanced Gut Health - Histamine Free Probiotic for Those Seeking Health Improvements with Histamine Control -60 Capsules
VitaMonk$34.62631 rev
Seeking Health DAO Enzyme - Formerly Histamine Digest DAO Enzyme Supplement for Histamine Food Intolerance Supports Digestive Health Upset Stomach (90 Capsules)*
Seeking Health$85.942,225 rev
Seeking Health ProBiota HistaminX - Digestion Supplement for Gut Health Support - Support Histamine with Lactobacillus Plantarum & Lactobacillus Salivarius - Support Immune & Skin Health - 60 Capsules
Seeking Health$40.391,342 rev
Trending
90-day click momentumSOLARAY DAO Enzyme - Digestive Enzyme that Breaks Down Histamine - 60 000 HDU - Digestive Enzymes - Vegan Gluten Free Lab Verified - 30 Servings 30 VegCaps
SOLARAY$21.934.3★
Omne Diem DAO 30 000 HDU - 60 Caps - Histamine Neutralizing Enzyme - Relieve Histamine Intolerance with Diamine Oxidase - The Original Tested DAO Enzyme Supplement
Omne Diem$54.654.3★
Seeking Health ProBiota HistaminX - Digestion Supplement for Gut Health Support - Support Histamine with Lactobacillus Plantarum & Lactobacillus Salivarius - Support Immune & Skin Health - 60 Capsules
Seeking Health$40.394.4★
Seeking Health HistaminX - Supplement with Bromelain & Flavonoids - Formula Aids Healthy Swelling Responses & Seasonal Comfort - Support Immune System with Antioxidants - 60 Capsules
Seeking Health$44.674.6★
VitaMonk Low Histamine Probiotics Fight Histamine Intolerance and Support Balanced Gut Health - Histamine Free Probiotic for Those Seeking Health Improvements with Histamine Control -60 Capsules
VitaMonk$34.624.3★
What reviews say buyers love and hate about histamine digest
What buyers praise and complain about, mined from review topics.What buyers love
“It helps my histamine intolerance”
“Seems to work ok”
“Fabulous product”
“Allergies are better”
“this product is SO WORTH IT”
“This helped my gut immensely”
“lots of salad”
“the best Ive ever purchased so far you need these for people with autoimmune disorders”
“There is much less reaction to food”
“this helps me digest them”
What buyers complain about
“too expensive”
“Like literally I would get sick from my own histamine if I had an encounter with an allergen”
“Did nothing to quell the”
“and it gave me heartburn”
“the medication had other side effects”
“Would not recommend for sensitive stomachs”
“the fact that there aren't enough capsules for a month at the recommended daily dose”
“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”
“Dont take if you have IBS”
“Poor quality control”
Top return reasons
Common histamine digest questions
- Is histamine digest profitable to sell on Amazon United States?
- The niche generates $968K/yr across 7 tracked products. 90-day search growth is -6.8%. Flapen's verdict: Worth a look (54/100).
- How competitive is the histamine digest niche?
- 4 brands and 13 sellers compete. The top 5 products take 91% of clicks and top 5 brands hold 100% of demand.
- What do buyers complain about in histamine digest?
- Top complaints mined from reviews: Value For Money, Allergies, Functionality-Overall. The return rate is 0.0%.
- When does demand for histamine digest peak?
- Demand peaks in Jun–Jul; the busiest month runs 2.0× the quietest.
- What does it cost to enter the histamine digest niche?
- Listings span $21.93–$85.94; the average listing price is $45.81 (sweet spot $15–$100). The average incumbent carries 1,132 reviews — the moat a new listing must climb.