d hist
Skip itBrand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Returns
Incredible0.0%return rate — above 6% kills the launch gate
Avg price
Great$64.38avg listing price — sweet spot $15–$100
Price range
Good$23.23–$127.16cheapest to priciest tracked listing — scored on the share inside $15–$100
Market size
Good$667K$667K/yr · 353K searches
Review moat
Good1,048.67avg incumbent reviews — the moat a new listing must climb
Quality gap
Okay4.5★avg incumbent rating — lower means beatable quality
Conversion
Okay2.9%search→purchase rate — share of searches ending in a sale
Growth
Bad-2.3%90-day search growth — must beat 0% to launch
Competition
Bad83%top-5 click share — a locked-up shelf
Brand share
Bad100%top-5 brand share — brand-locked demand
Competition
The top 5 products capture 83% of clicks — a locked-up shelf that new listings rarely crack.Brands
5 falling
Sellers
25
Top-5 brand share
100%
Open market
0%
- Ortho Molecular Products70%
- Pure Encapsulations10%
- Histamine Shield Plus9%
- ForestLeaf7%
- Granions4%
- Open — no brand owns it (0%)
Product shelf
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 9 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
Ortho Molecular Natural D-Hist - 120 Capsules
Ortho Molecular Products$85.804.8★65 rev
Pure Encapsulations Hist Reset | Support for Nasal and Respiratory Health* | 120 Capsules
Pure Encapsulations$59.294.7★92 rev
Histamine Shield Plus Natural Antihistamine Supplement for Adults Sinus & Allergy Relief for Pollen Pet Dander Dust Mold and Odors Quercetin with Bromelain & Stinging Nettle 120 Capsules
Histamine Shield Plus$41.644.3★460 rev
ForestLeaf Quercetin with Bromelain 1350mg - Blend with Vitamin C & Stinging Nettle Supplement Quercetin 500mg Capsules Non-GMO Gluten Free Natural Function 90 Veggie Caps
ForestLeaf$23.234.7★8,558 rev
Ortho Molecular Reacted Magnesium - 60 Capsules
Ortho Molecular Products$54.254.7★33 rev
Newest
by launch dateOrtho Molecular Reacted Magnesium - 60 Capsules
Ortho Molecular Products$54.2533 rev
Ortho Molecular Vitamin K2 with D3-60 Capsules
Ortho Molecular Products$69.1514 rev
Ortho Biotic Capsules - 60 Capsules
Ortho Molecular Products$92.7521 rev
Ortho Molecular Natural D-Hist - 120 Capsules
Ortho Molecular Products$85.8065 rev
Granions Histamine Blocker Complex - 1 000mg Quercetin with Bromelain NAC and Vitamin C - D-Hist Seasonal Histamine Balance & Immune Support Supplement for Adults and Children - 60 Vegan Capsules
Granions$26.13162 rev
Trending
90-day click momentum
SEVNODI Ortho Molecular - Orthomega 820-180 Soft Gel Capsules
Ortho Molecular Products$127.164.6★
Ortho Molecular Natural D-Hist - 120 Capsules
Ortho Molecular Products$85.804.8★
Ortho Molecular Reacted Magnesium - 60 Capsules
Ortho Molecular Products$54.254.7★
Ortho Molecular Vitamin K2 with D3-60 Capsules
Ortho Molecular Products$69.154.7★
ForestLeaf Quercetin with Bromelain 1350mg - Blend with Vitamin C & Stinging Nettle Supplement Quercetin 500mg Capsules Non-GMO Gluten Free Natural Function 90 Veggie Caps
ForestLeaf$23.234.7★
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -2.3% search growth over the last 90 days.Peak months: Mar, Apr, May · busiest ÷ quietest = 3.8×
Reviews
What buyers praise and complain about, mined from review topics.What buyers love
“Allergy Relief”
“Great produc”
“Great supplement”
“No side effects”
“Effective”
“Good value for the money”
“Affordable Quality Quercetin”
“Love them for eating out with histamine issues”
“This is very effective for sinus issues”
“Good value easy dosage”
What buyers complain about
“I had a terrible reaction”
“Not worth the price point”
“Did not work”
“gave me asthma attacks bad”
“I have a hard time falling asleep”
“magnesium srearate not needed in the body”
“Cant really see the benefits of this yet”
“Received and there was no safety seal or seal around the top; therefore, I do not feel comfortable taking this product”
“when I start to feel a cold or sinus issues”
“Capsules are too large”