---
title: "Alginate — $4.6M/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/alginate"
last_updated: "2026-08-06T00:32:07.083Z"
locale: en
meta:
description: "Niche score 65/100 · $4.6M/yr market · 1.5M searches/yr · $30.88 avg price. Clears our launch bar. Data updated Jul 2026."
"og:description": "Niche score 65/100 · $4.6M/yr market · 1.5M searches/yr · $30.88 avg price. Clears our launch bar. Data updated Jul 2026."
"og:title": "Alginate — $4.6M/yr Amazon US Niche (2026) - Flapen"
---
# **alginate**
**Launch it**
A $4.6M/yr market growing +11.2% this quarter with returns at 0.0% — clears our launch bar.
Market size 97Growth 39Conversion 87Competition 21Returns 100Price range 95Avg price 95Brand share 15Review moat 59Quality gap 83
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Market size**
**Incredible****$4.6M**
$4.6M/yr · 1.5M searches
**Avg price**
**Incredible****$30.88**
avg listing price — sweet spot $15–$100
**Price range**
**Incredible****$17.94–$57.86**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Conversion**
**Great****10.0%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Great****4.2★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Good****1,122.33**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Okay****+11.2%**
90-day search growth — must beat 0% to launch
**Competition**
**Bad****74%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****94%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, alginate is a $4.6M/yr Amazon United States market (1.5M searches/yr). The top 5 brands hold 94% of demand. Demand peaks in Jun–Jul. Verdict: Launch it — 65/100.
Data updated Jul 11, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **alginate market data**
- **Units sold / yr**
- **125K–150K**
- avg 10,000–12,500/product
- **Revenue / yr**
- **$3.9M–$4.6M**
- units × avg price
- **Conversion rate**
- **10.0%**
- **Avg BSR**
- **#95**
- **Page quality**
- **0%**
- **Prime**
- **93%**
- **Sponsored**
- **87%**
- **Out of stock**
- **2.4%**
- **Avg brand age**
- **70 months**
- **Avg seller age**
- **155 days**
## **Competition & brand share**
The top 5 products capture 74% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**8 **▲rising
**Sellers**
**22**
**Top-5 brand share**
**94%**
Top 20: 100%
**Top-5 click share**
**74%**
Top 20: 100%
**Open market**
**4%**
- REFLUX GOURMET59% - RefluxRaft25% - Nutritist4% - ASK GRANDPA GOURMET COFFEES4% - HartSpan3% - Generic2% - Open — no brand owns it (2 brands, 4%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +11.2% search growth over the last 90 days.
35K25KBlack Friday '24Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jun, Jul · busiest ÷ quietest = 11.5×
[**Open Trend **](https://flapen.com/research/us/health-household/alginate/trend)
## **Top alginate search terms**
- **reflux gourmet**416K/yr+37.0%15.2% conv. - **clone a willy silicone mold**447K/yr-27.6%0.3% conv. - **reflux raft**114K/yr+70.4%12.1% conv. - **alginate for acid reflux**94K/yr+9.4%5.3% conv. - **reflux gourmet vanilla caramel**76K/yr+65.8%16.3% conv. - **alginate**84K/yr+10.8%3.0% conv. - **refluxraft**36K/yr-23.6%11.4% conv. - **reflux raft alginate**23K/yr+10.4%11.0% conv. - **sodium alginate for acid reflux**24K/yr+18.6%3.6% conv. - **raft reflux relief**7K/yr>1,000%12.1% conv. [**All search terms **](https://flapen.com/research/us/health-household/alginate/search-terms)
## **Top alginate 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%$459K20%$919K30%$1.4M40%$1.8M1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 15 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**REFLUX GOURMET Vanilla Caramel Rescue Alginate Complex Digestive Support Formula Made with Natural Ingredients 8 Fl. Oz**REFLUX GOURMET**$28.16**4.2★6,040 rev](https://www.amazon.com/dp/B086ZYPWQK) [2**REFLUX GOURMET Mint Chocolate & Vanilla Caramel Rescue Alginate Complex Digestive Support Formula Single Serve 25 Pack**REFLUX GOURMET**$32.29**4.3★1,245 rev](https://www.amazon.com/dp/B08Z6HBVJP) [3**RefluxRaft Acid Reflux Therapy with Organic Alginate Pregnancy Safe Fast & Long-Lasting GERD & LPR Support Zero Sugar Gluten-Free Low Sodium Berry Burst 60 Gel Servings 10 OZ Bottle**RefluxRaft**$32.95**4.1★547 rev](https://www.amazon.com/dp/B0DJ7TXQTW) [4**REFLUX GOURMET Mint Chocolate Rescue Alginate Complex Digestive Support Formula Made with Natural Ingredients 8 Fl. Oz**REFLUX GOURMET**$28.25**4.3★1,772 rev](https://www.amazon.com/dp/B07NKNL3RJ) [5**RefluxRaft Acid Reflux Therapy with Organic Alginate Rapid & Long Lasting Gerd LPR & Digestion Symptom Support Zero Sugar Gluten Free Low Sodium Lemon Ginger 60 Gel Servings 10 OZ Bottle**RefluxRaft**$32.73**4.0★828 rev](https://www.amazon.com/dp/B09Z2DQPQ7)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**HartSpan Khelp All-Natural Reflux Support Premium Alginate Supplement | GERD Heartburn LPR & Acid Reflux | Drug-Free Designed for Daily Use | No Dyes or Flavors | 60 Vegan Capsules**HartSpan**$53.27**129 rev8mo ago](https://www.amazon.com/dp/B0FH7HSRLD) [**BTBS Valentines Day Naughty Adult Silicone Molds Sexy Erotic Molds (Large)**Generic**$17.94**1 rev2y ago](https://www.amazon.com/dp/B0D9781F2W) [**Refluxter Sodium Alginate Capsules 1000+ mg for Acid Reflux LPR & GERD**Nutritist**$29.77**464 rev2y ago](https://www.amazon.com/dp/B0CZDJ1MSK) [**REFLUX GOURMET Berry Soothe Gum Alginate Therapy Sodium Bicarbonate Gum for Acid Reflux Oral Cognitive and Digestive Support Natural with Ginger Celeriac and Aloe Sugar Free Gluten Free Vegan**REFLUX GOURMET**$22.00**676 rev2y ago](https://www.amazon.com/dp/B0CLSCMSR6) [**Reflux Gourmet Tropical Soothe Gum Alginate Therapy Sodium Bicarbonate Gum for Acid Reflux Oral Cognitive and Digestive Support Natural with Ginger Celeriac Aloe Sugar Free Gluten Free Vegan**REFLUX GOURMET**$21.99**407 rev2y ago](https://www.amazon.com/dp/B0CLSTNLNJ)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**REFLUX GOURMET Mint Chocolate Rescue Alginate Complex Digestive Support Formula Made with Natural Ingredients 8 Fl. Oz**REFLUX GOURMET**$28.25**4.3★**▲ 78%**](https://www.amazon.com/dp/B07NKNL3RJ) [**RefluxRaft Acid Reflux Therapy with Organic Alginate Pregnancy Safe Fast & Long-Lasting GERD & LPR Support Zero Sugar Gluten-Free Low Sodium Berry Burst 60 Gel Servings 10 OZ Bottle**RefluxRaft**$32.95**4.1★**▲ 47%**](https://www.amazon.com/dp/B0DJ7TXQTW) [**REFLUX GOURMET Mint Chocolate & Vanilla Caramel Rescue Alginate Complex Digestive Support Formula Single Serve 25 Pack**REFLUX GOURMET**$32.29**4.3★**▲ 39%**](https://www.amazon.com/dp/B08Z6HBVJP) [**RefluxRaft Acid Reflux Therapy with Organic Alginate Long Lasting Gerd LPR & Digestion Symptom Support Zero Sugar Gluten Free Low Sodium Berry Burst 60 Gel Servings 10 OZ Bottle 2 Pack**RefluxRaft**$57.86**4.1★**▲ 27%**](https://www.amazon.com/dp/B0DM47B2WS) [**BTBS Valentines Day Naughty Adult Silicone Molds Sexy Erotic Molds (Large)**Generic**$17.94**5.0★**▲ 26%**](https://www.amazon.com/dp/B0D9781F2W)
**~~View all trending →~~**
## **What buyers say about alginate**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Regulates Digestion**13%
*“our digestion feels a little more smoother overall”*
**Taste-Overall**13%
*“GREAT TASTE”*
**Acid Regulator/Stomach Ache Relief**8%
*“Helps with acid reflux”*
**Quality-Overall**7%
*“in general I found it a good supplement”*
**Efficiency**6%
*“Works ok”*
**Flavor**5%
*“Good flavor choices”*
**Sleep Quality**4%
*“it allows me a good night sleep”*
**Ease Of Use**3%
*“I try to keep it handy”*
**Heart Health**3%
*“Seems to help prevent heartburn”*
**Advertised Vs Actual Product**3%
*“Works as stated”*
### **What buyers complain about **
**Regulates Digestion**9%
*“Makes my reflux worse”*
**Functionality-Overall**9%
*“Not effective”*
**Taste-Overall**8%
*“Taste Awful”*
**Value For Money**7%
*“Not worth it”*
**Acid Regulator/Stomach Ache Relief**6%
*“Hurt my stomach”*
**Ease Of Chewing/Swallowing**4%
*“Hard to swallow”*
**Flavor**4%
*“I dont like the vanilla/caramel flavor”*
**Heart Health**3%
*“gave heart burn”*
**Side Effects**3%
*“Made my nauseated”*
**Dosage**2%
*“Dosen't work”*
### **Top return reasons **
**Functionality-Overall**16%
**Taste-Overall**13%
**Ease Of Chewing/Swallowing**11%
**Joint Pain**8%
**Hard Feel**7%
**Dosage**4%
**Ingredients-Overall**4%
**Size-Overall**4%
**Smell**4%
**Vitamin**4%
## **Common questions**
- **Is alginate profitable to sell on Amazon United States?**
- The niche generates $4.6M/yr across 15 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +11.2%. Flapen's verdict: Launch it (65/100).
- **How competitive is the alginate niche?**
- 8 brands and 22 sellers compete. The top 5 products take 74% of clicks and top 5 brands hold 94% of demand.
- **What do buyers complain about in alginate?**
- Top complaints mined from reviews: Regulates Digestion, Functionality-Overall, Taste-Overall. The return rate is 0.0%.
- **When does demand for alginate peak?**
- Demand peaks in Jun–Jul; the busiest month runs 11.5× the quietest.
- **What does it cost to enter the alginate niche?**
- Listings span $17.94–$57.86; the average listing price is $30.88 (sweet spot $15–$100). The average incumbent carries 1,122 reviews — the moat a new listing must climb.
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