Is postbiotics profitable to sell on Amazon United States?

The niche generates $419K/yr across 5 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -41.5%. Flapen's verdict: Skip it (41/100).

How competitive is the postbiotics niche?

4 brands and 6 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.

What do buyers complain about in postbiotics?

Top complaints mined from reviews: Regulates Digestion, Functionality-Overall, Acid Regulator/Stomach Ache Relief. The return rate is 0.0%.

When does demand for postbiotics peak?

Demand peaks in Jan–Aug–Oct; the busiest month runs 4.6× the quietest.

What does it cost to enter the postbiotics niche?

Listings span $20.60–$157.51; the average listing price is $58.49 (sweet spot $15–$100). The average incumbent carries 2,415 reviews — the moat a new listing must climb.

postbiotics

Skip it

A concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.

Returns

Incredible0.0%

return rate — above 5% kills the launch gate

Avg price

Great$58.49

avg listing price — sweet spot $15–$100

Quality gap

Good4.3★

avg incumbent rating — lower means beatable quality

Conversion

Good5.1%

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

Price range

Good$20.60–$157.51

cheapest to priciest tracked listing — scored on the share inside $15–$100

Market size

Good$419K

$419K/yr · 140K searches

Review moat

Okay2,414.8

avg incumbent reviews — the moat a new listing must climb

Growth

Bad-41.5%

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

Competition

Bad100%

top-5 click share — a locked-up shelf

Brand share

Bad100%

top-5 brand share — brand-locked demand

Signals High Price

According to Flapen's Amazon United States niche tracking, postbiotics is a $419K/yr Amazon United States market (140K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Jan–Aug–Oct. Verdict: Skip it — 41/100.

Data updated Jul 25, 2026 · scored weekly · How we score niches

postbiotics market data

Units sold / yr: 6K–8K; avg 1,250–1,500/product
Revenue / yr: $351K–$468K; units × avg price
Conversion rate: 5.1%
Avg BSR: #115
Page quality: 0%
Prime: 100%
Sponsored: 100%
Out of stock: 0.0%
Avg brand age: 67 months
Avg seller age: 145 days

Competition & brand share

The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.

Brands

4 flat

Sellers

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

100%

Top 20: 100%

Open market

Gundry MD86%
PLANT.O NUTRITION6%
Totaria5%
Sunergetic4%
Open — no brand owns it (0%)

Demand & seasonality

Weekly Amazon search volume, last 103 weeks — -41.5% search growth over the last 90 days.

Peak months: Jan, Aug, Oct · busiest ÷ quietest = 4.6×

Open Trend

Top postbiotics 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 5 tracked products in this niche — three views at once, no toggling.

Top sellers

by 90-day click share

Gundry MD Bio Complete 3 - Prebiotic Probiotic Postbiotic to Support Optimal Gut Health 90 Day Supply

Gundry MD$157.514.2★3,976 rev

Gundry MD Bio Complete 3 3-in-1 Probiotics for Gut Health Probiotic Supplements for Digestion Supplement Supporting Bloating Gas Food Cravings Energy Levels Skin and Focus 30 Day Supply

Gundry MD$65.764.2★3,976 rev

4-in-1 Gut Health Support Prebiotics + Probiotics + Postbiotics + Digestive Enzymes for Women and Men DE111 Spore Probiotic for Digestive Support & Bloating Non-GMO 60 Veggie Capsules

PLANT.O NUTRITION$27.764.4★1,793 rev

Totaria 5-in-1 Probiotic Prebiotic & Postbiotic for Women Men 60 Billion CFU 24 Strains w/Digestive Enzymes Prebiotic Fiber Slippery Elm Daily Complete Immune Gut Health 120 Day Supply

Totaria$20.814.5★832 rev

Premium 4-in-1 Probiotic Prebiotic & Postbiotic - Tribiotic Blend with Digestive Enzymes for Men & Women - Supports Gut Digestion & Immunity - Complete Gut Health with Pre Post & Probiotics - 60 Ct

Sunergetic$20.604.4★1,497 rev

Newest

by launch date

Totaria 5-in-1 Probiotic Prebiotic & Postbiotic for Women Men 60 Billion CFU 24 Strains w/Digestive Enzymes Prebiotic Fiber Slippery Elm Daily Complete Immune Gut Health 120 Day Supply

Totaria$20.81832 rev

8mo ago

Gundry MD Bio Complete 3 - Prebiotic Probiotic Postbiotic to Support Optimal Gut Health 90 Day Supply

Gundry MD$157.513,976 rev

1y ago

Premium 4-in-1 Probiotic Prebiotic & Postbiotic - Tribiotic Blend with Digestive Enzymes for Men & Women - Supports Gut Digestion & Immunity - Complete Gut Health with Pre Post & Probiotics - 60 Ct

Sunergetic$20.601,497 rev

1y ago

Gundry MD Bio Complete 3 3-in-1 Probiotics for Gut Health Probiotic Supplements for Digestion Supplement Supporting Bloating Gas Food Cravings Energy Levels Skin and Focus 30 Day Supply

Gundry MD$65.763,976 rev

2y ago

4-in-1 Gut Health Support Prebiotics + Probiotics + Postbiotics + Digestive Enzymes for Women and Men DE111 Spore Probiotic for Digestive Support & Bloating Non-GMO 60 Veggie Capsules

PLANT.O NUTRITION$27.761,793 rev

3y ago

What buyers say about postbiotics

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

What buyers love

Regulates Digestion18%

“my constipation has improved”

Quality-Overall11%

“Excellent product”

Efficiency8%

“Effective”

Nutritional Content8%

“Great probiotic”

Acid Regulator/Stomach Ache Relief7%

“It helps with my stomach”

Value For Money5%

“Good value”

Vitamin5%

“Fabulous supplement”

Ease Of Chewing/Swallowing3%

“The capsules are easy to take”

Ease Of Use3%

“convenient for everyday use”

Advertised Vs Actual Product3%

“As advertised”

What buyers complain about

Regulates Digestion12%

“making your digestive issues worse”

Functionality-Overall9%

“Doesn't work”

Acid Regulator/Stomach Ache Relief8%

“I had bad stomach pain”

Weight Loss7%

“Had weight lost surgery which means there are some complications”

Value For Money5%

“Waste of money”

Side Effects4%

“Horrible side effects”

Dosage4%

“I can never ever use this amount of meds thank you”

Pain Relief-Overall3%

“Severe pain”

Advertised Vs Actual Product3%

“Doesn't work as stated”

Allergies2%

“a skin rash”

Common questions

Is postbiotics profitable to sell on Amazon United States?: The niche generates $419K/yr across 5 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -41.5%. Flapen's verdict: Skip it (41/100).
How competitive is the postbiotics niche?: 4 brands and 6 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in postbiotics?: Top complaints mined from reviews: Regulates Digestion, Functionality-Overall, Acid Regulator/Stomach Ache Relief. The return rate is 0.0%.
When does demand for postbiotics peak?: Demand peaks in Jan–Aug–Oct; the busiest month runs 4.6× the quietest.
What does it cost to enter the postbiotics niche?: Listings span $20.60–$157.51; the average listing price is $58.49 (sweet spot $15–$100). The average incumbent carries 2,415 reviews — the moat a new listing must climb.

postbiotics

postbiotics market data

Competition & brand share

Demand & seasonality

Top postbiotics search terms