---
title: "Castao De Indias — $70K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/pet-supplies/castao-de-indias"
last_updated: "2026-07-21T19:36:57.017Z"
locale: en
meta:
description: "Niche score 42/100 · $70K/yr market · 103K searches/yr · $17.12 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 42/100 · $70K/yr market · 103K searches/yr · $17.12 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Castao De Indias — $70K/yr Amazon US Niche (2026) - Flapen"
---
# **castao de indias**
**Skip it**
A concentrated shelf (top 5 take 82% of clicks) — this niche doesn't clear our bar today.
Market size 17Growth 26Conversion 49Competition 15Returns 100Price range 69Avg price 80Brand share 38Review moat 56Quality gap 45
**Returns**
**Incredible****0.0%**
return rate — above 6% kills the launch gate
**Avg price**
**Great****$17.12**
avg listing price — sweet spot $15–$100
**Price range**
**Good****$8.45–$29.48**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Review moat**
**Good****1,251.82**
avg incumbent reviews — the moat a new listing must climb
**Conversion**
**Okay****4.0%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Okay****82%**
top-5 brand share — brands hold most of the demand
**Growth**
**Okay****+0.5%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****$70K**
$70K/yr · 103K searches
**Competition**
**Bad****82%**
top-5 click share — a locked-up shelf
According to Flapen's Amazon United States niche tracking, castao de indias is a $70K/yr Amazon United States market (103K searches/yr). The top 5 brands hold 82% of demand. Demand peaks in Aug–Sep. Verdict: Skip it — 42/100.
Data updated Jul 17, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **castao de indias market data**
- **Units sold / yr**
- **4K–5K**
- avg 250–500/product
- **Revenue / yr**
- **$68K–$86K**
- units × avg price
- **Launch success**
- **—**
- 0 of 1 new (360d)
- **Conversion rate**
- **4.0%**
- **Avg BSR**
- **#3,579**
- **Page quality**
- **0%**
- **Prime**
- **82%**
- **Sponsored**
- **55%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **73 months**
- **Avg seller age**
- **172 days**
## **Competition & brand share**
The top 5 products capture 82% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**11 **▼falling
**Sellers**
**18**
**Top-5 brand share**
**82%**
Top 20: 100%
**Top-5 click share**
**82%**
Top 20: 100%
**Open market**
**13%**
- Zazzee30% - B-Experts29% - Natural de Mexico8% - Nature's Way8% - Betel Natural7% - Nurbetoxa5% - Open — no brand owns it (5 brands, 13%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +0.5% search growth over the last 90 days.
5K3KSpike '24Black Friday '24Spike '25Prime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Aug, Sep · busiest ÷ quietest = 3.9×
[**Open Trend **](https://flapen.com/research/us/pet-supplies/castao-de-indias/trend)
## **Top castao de indias search terms**
- **castao de indias para la circulacin**32K/yr+1.7%3.5% conv. - **castao de indias**28K/yr-12.8%3.3% conv. - **castaa de indias para varices**12K/yr+2.5%2.4% conv. - **castaa de india**9K/yr+15.2%4.3% conv. - **castano de indias**7K/yr+1.9%5.6% conv. - **castao de indias para varices**3K/yr+100.6%1.5% conv. - **castaa de indias**4K/yr-4.4%3.9% conv. - **castano de indias organico**3K/yr-16.4%3.9% conv. - **castana de india natural**3K/yr-5.2%5.4% conv. [**All search terms **](https://flapen.com/research/us/pet-supplies/castao-de-indias/search-terms)
## **Top castao de indias 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%$7K20%$14K30%$21K40%$28K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 11 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Zazzee Extra Strength Horse Chestnut 10:1 Extract 20% Aescins 120 Vegan Capsules 4 Month Supply Aesculus Hippocastanum Healthy Circulation & Blood Flow Support Non-GMO Made in the USA**Zazzee**$20.60**4.5★867 rev](https://www.amazon.com/dp/B0CT8XLHKV) [2**Castao De Indias (Horse Chestnut Capsules) 1500 mg per Serving 90 Veggie Caps 100% Natural Premium Dietary Supplement Made in USA Supports Circulatory & Vein Health**B-Experts**$15.36**4.7★137 rev](https://www.amazon.com/dp/B0DZG8J8PS) [3**Castano de Indias Horse Chestnut Herb Herbal Tea 4 oz.-113g Natural Mexican Herb Hierba Wild Crafted Natural De Mexico**Natural de Mexico**$16.98**4.2★19 rev](https://www.amazon.com/dp/B0DK7YDQ71) [4**Natures Way Horse Chestnut Extract Premium Extract Supports Healthy Leg Veins* Standardized to 20% Aescin Non-GMO Project Verified Gluten Free Vegan 90 Capsules**Nature's Way**$9.07**4.5★4,746 rev](https://www.amazon.com/dp/B0002MSSGE) [5**Betel Natural Premium Castano de Indias para la Circulacion 1500 mg - Horse Chestnut 90 Caps**Betel Natural**$17.85**4.5★897 rev](https://www.amazon.com/dp/B0755SPTJN)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Horse Chestnut Capsules Castao de Indias 1500 mg per Serving | Supports Circulation & Vein Health | Promotes Leg Comfort & Wellness | Vegan Non-GMO Made in USA 90 Vegetable Capsules**GREEN ROYALTY**$13.84**12 rev8mo ago](https://www.amazon.com/dp/B0FZFBT3XT) [**Castao De Indias (Horse Chestnut Capsules) 1500 mg per Serving 90 Veggie Caps 100% Natural Premium Dietary Supplement Made in USA Supports Circulatory & Vein Health**B-Experts**$15.36**137 rev1y ago](https://www.amazon.com/dp/B0DZG8J8PS) [**Castano de Indias Horse Chestnut Herb Herbal Tea 4 oz.-113g Natural Mexican Herb Hierba Wild Crafted Natural De Mexico**Natural de Mexico**$16.98**19 rev1y ago](https://www.amazon.com/dp/B0DK7YDQ71) [**Nutricost Horse Chestnut Extract Capsules 700 MG Per Serving 180 Capsules 90 Servings - Non-GMO Vegan**Nutricost**$15.34**301 rev2y ago](https://www.amazon.com/dp/B0D2RZYWYJ) [**Zazzee Extra Strength Horse Chestnut 10:1 Extract 20% Aescins 120 Vegan Capsules 4 Month Supply Aesculus Hippocastanum Healthy Circulation & Blood Flow Support Non-GMO Made in the USA**Zazzee**$20.60**867 rev2y ago](https://www.amazon.com/dp/B0CT8XLHKV)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Natures Way Horse Chestnut Extract Premium Extract Supports Healthy Leg Veins* Standardized to 20% Aescin Non-GMO Project Verified Gluten Free Vegan 90 Capsules**Nature's Way**$9.07**4.5★**▲ 34%**](https://www.amazon.com/dp/B0002MSSGE) [**Horse Chestnut Capsules Castao de Indias 1500 mg per Serving | Supports Circulation & Vein Health | Promotes Leg Comfort & Wellness | Vegan Non-GMO Made in USA 90 Vegetable Capsules**GREEN ROYALTY**$13.84**4.6★**▲ 22%**](https://www.amazon.com/dp/B0FZFBT3XT) [**Carlyle Horse Chestnut Extract | 600mg | 180 Capsules | Herbal Supplement | Non-GMO Gluten Free**Carlyle**$15.28**4.5★**▲ 21%**](https://www.amazon.com/dp/B09L1Q84T3) [**Nurbetoxa Blood Circulation Horse Chestnut Extract Liquid Drops Castao de Indias y Diosmina para la Circulacion y Varices Nitric Oxide Supplement for Blood Flow Pressure & Heart Health.2 oz**Nurbetoxa**$26.11**4.6★**▲ 11%**](https://www.amazon.com/dp/B0CP1R81GX) [**Castao De Indias (Horse Chestnut Capsules) 1500 mg per Serving 90 Veggie Caps 100% Natural Premium Dietary Supplement Made in USA Supports Circulatory & Vein Health**B-Experts**$15.36**4.7★**— 4%**](https://www.amazon.com/dp/B0DZG8J8PS)
**~~View all trending →~~**
## **What buyers say about castao de indias**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**23%
*“Good quality and easy to take”*
**Efficiency**13%
*“Working exactly as our doctor expected”*
**Inflammation**7%
*“I like the positive impact this has had on reducing inflammation in my knees”*
**Advertised Vs Actual Product**7%
*“Product was as advertised”*
**Joint Pain**6%
*“Helps with foot pain and neuropathy”*
**Vitamin**4%
*“Good supplement”*
**Heart Health**3%
*“The formula is designed to support healthy blood flow, vascular function, vein health, and overall cardiovascular wellness”*
**Blood Pressure**3%
*“Helps blood flow”*
**Value For Money**3%
*“Good value for money”*
**Dosage**2%
*“Use it twice a day”*
### **What buyers complain about **
**Allergies**10%
*“Made me sick”*
**Smell**9%
*“Smelly cream”*
**Vitamin**8%
*“Better off taking a multi-vitamin”*
**Functionality-Overall**8%
*“Didnt work”*
**Acid Regulator/Stomach Ache Relief**8%
*“stomach pain”*
**Blood Pressure**6%
*“I have a circulation issue”*
**Dosage**6%
*“3000mg is not a safe dosage”*
**Itch Relief**5%
*“Caused itching for me”*
**Pain Relief-Overall**5%
*“I normally have aching pain from my knees down to my feet 7/10 pain”*
**Certifications**3%
*“theres NO scientific proof”*
### **Top return reasons **
**Functionality-Overall**60%
**Iron**20%
**Size-Overall**20%
## **Common questions**
- **Is castao de indias profitable to sell on Amazon United States?**
- The niche generates $70K/yr across 11 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is +0.5%. Flapen's verdict: Skip it (42/100).
- **How competitive is the castao de indias niche?**
- 11 brands and 18 sellers compete. The top 5 products take 82% of clicks and top 5 brands hold 82% of demand.
- **What do buyers complain about in castao de indias?**
- Top complaints mined from reviews: Allergies, Smell, Vitamin. The return rate is 0.0%.
- **When does demand for castao de indias peak?**
- Demand peaks in Aug–Sep; the busiest month runs 3.9× the quietest.
- **What does it cost to enter the castao de indias niche?**
- Listings span $8.45–$29.48; the average listing price is $17.12 (sweet spot $15–$100). The average incumbent carries 1,252 reviews — the moat a new listing must climb.
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