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.

alginate

Launch it

A $4.6M/yr market growing +11.2% this quarter with returns at 0.0% — clears our launch bar.

Returns

Incredible0.0%

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

Great10.0%

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

Quality gap

Great4.2★

avg incumbent rating — lower means beatable quality

Review moat

Good1,122.33

avg incumbent reviews — the moat a new listing must climb

Growth

Okay+11.2%

90-day search growth — must beat 0% to launch

Competition

Bad74%

top-5 click share — a locked-up shelf

Brand share

Bad94%

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

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

Top-5 brand share

94%

Top 20: 100%

Top-5 click share

74%

Top 20: 100%

Open market

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.

Peak months: Jun, Jul · busiest ÷ quietest = 11.5×

Open Trend

Top alginate search terms

reflux gourmet416K/yr +37.0%15.2% conv.
clone a willy silicone mold447K/yr -27.6%0.3% conv.
reflux raft114K/yr +70.4%12.1% conv.
alginate for acid reflux94K/yr +9.4%5.3% conv.
reflux gourmet vanilla caramel76K/yr +65.8%16.3% conv.
alginate84K/yr +10.8%3.0% conv.
refluxraft36K/yr -23.6%11.4% conv.
reflux raft alginate23K/yr +10.4%11.0% conv.
sodium alginate for acid reflux24K/yr +18.6%3.6% conv.
raft reflux relief7K/yr >1,000%12.1% conv.

All 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.

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

REFLUX GOURMET Vanilla Caramel Rescue Alginate Complex Digestive Support Formula Made with Natural Ingredients 8 Fl. Oz

REFLUX GOURMET$28.164.2★6,040 rev

REFLUX GOURMET Mint Chocolate & Vanilla Caramel Rescue Alginate Complex Digestive Support Formula Single Serve 25 Pack

REFLUX GOURMET$32.294.3★1,245 rev

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$32.954.1★547 rev

REFLUX GOURMET Mint Chocolate Rescue Alginate Complex Digestive Support Formula Made with Natural Ingredients 8 Fl. Oz

REFLUX GOURMET$28.254.3★1,772 rev

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$32.734.0★828 rev

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$53.27129 rev

8mo ago

BTBS Valentines Day Naughty Adult Silicone Molds Sexy Erotic Molds (Large)

Generic$17.941 rev

2y ago

Refluxter Sodium Alginate Capsules 1000+ mg for Acid Reflux LPR & GERD

Nutritist$29.77464 rev

2y ago

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$22.00676 rev

2y ago

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$21.99407 rev

2y ago

What buyers say about alginate

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

What buyers love

Regulates Digestion13%

“our digestion feels a little more smoother overall”

Taste-Overall13%

“GREAT TASTE”

Acid Regulator/Stomach Ache Relief8%

“Helps with acid reflux”

Quality-Overall7%

“in general I found it a good supplement”

Efficiency6%

“Works ok”

Flavor5%

“Good flavor choices”

Sleep Quality4%

“it allows me a good night sleep”

Ease Of Use3%

“I try to keep it handy”

Heart Health3%

“Seems to help prevent heartburn”

Advertised Vs Actual Product3%

“Works as stated”

What buyers complain about

Regulates Digestion9%

“Makes my reflux worse”

Functionality-Overall9%

“Not effective”

Taste-Overall8%

“Taste Awful”

Value For Money7%

“Not worth it”

Acid Regulator/Stomach Ache Relief6%

“Hurt my stomach”

Ease Of Chewing/Swallowing4%

“Hard to swallow”

Flavor4%

“I dont like the vanilla/caramel flavor”

Heart Health3%

“gave heart burn”

Side Effects3%

“Made my nauseated”

Dosage2%

“Dosen't work”

Top return reasons

Functionality-Overall16%

Taste-Overall13%

Ease Of Chewing/Swallowing11%

Joint Pain8%

Hard Feel7%

Dosage4%

Ingredients-Overall4%

Size-Overall4%

Smell4%

Vitamin4%

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.

alginate

alginate market data

Competition & brand share

Demand & seasonality

Top alginate search terms

Top alginate products on Amazon

Top sellers

Newest

Trending

What buyers say about alginate

What buyers love

What buyers complain about

Top return reasons

Common questions

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