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estradiol

Skip it

Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.

Market size 14Growth 19Conversion 52Competition 15Returns 97Price range 95Avg price 95Brand share 0Review moat 83Quality gap 76

Returns

Incredible0.5%

return rate — above 5% kills the launch gate

Avg price

Incredible$41.36

avg listing price — sweet spot $15–$100

Price range

Incredible$20.84–$69.38

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

Review moat

Great333.92

avg incumbent reviews — the moat a new listing must climb

Quality gap

Great4.3★

avg incumbent rating — lower means beatable quality

Conversion

Good4.2%

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

Growth

Bad-11.9%

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

Competition

Bad81%

top-5 click share — a locked-up shelf

Market size

Bad$58K

$58K/yr · 33K searches

Brand share

Bad100%

top-5 brand share — brand-locked demand

According to Flapen's Amazon United States niche tracking, estradiol is a $58K/yr Amazon United States market (33K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Jan–Feb–Mar–Apr. Verdict: Skip it — 44/100.

Data updated Jul 15, 2026 · scored weekly · How we score niches

estradiol market data

Units sold / yr
2K–2K
avg 100–250/product
Revenue / yr
$62K–$83K
units × avg price
Conversion rate
4.2%
Avg BSR
#1,267
Page quality
0%
Prime
100%
Sponsored
100%
Out of stock
4.7%
Avg brand age
57 months
Avg seller age
154 days

Competition & brand share

The top 5 products capture 81% of clicks — a locked-up shelf that new listings rarely crack.

Brands

4 falling

Sellers

44

Top-5 brand share

100%

Top 20: 100%

Top-5 click share

81%

Top 20: 100%

Open market

0%

  • HelloPharmacist56%
  • BIOLABS PRO39%
  • Vigority3%
  • Olidiva2%

Demand & seasonality

Weekly Amazon search volume, last 80 weeks — -11.9% search growth over the last 90 days.
5K4KSpike '25Prime Day '25Holiday '25Spike '26JanFebMarAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun

Peak months: Jan, Feb, Mar, Apr · busiest ÷ quietest = 6.9×

Top estradiol search terms

  • biolabs pro estrogen bi-est 5.07K/yr
  • bi-est 5.0 - estriol & estradiol cream6K/yr
  • bi-est5K/yr
  • bi est cream3K/yr
  • biolabs4K/yr
  • biolabs pro4K/yr
  • biest3K/yr
  • bi est2K/yr
All search terms

Top estradiol 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%$6K20%$12K30%$17K40%$23K101001K10K Reviews — right = deep review moat Market share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 13 tracked products in this niche — three views at once, no toggling.

What buyers say about estradiol

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

What buyers love

Quality-Overall10%

“Excellent product”

Efficiency10%

“Very effective”

Moist/Dry10%

“Very moisturizing”

Smell7%

“lightly scented”

Absorbency6%

“absorbs well”

Value For Money5%

“Excellent value for money”

Allergies3%

“not irritating at all”

Soft Feel3%

“I really like how gentle”

Ease Of Application3%

“it feels nice wherever I apply it”

Comfort-Overall3%

“More comfortable”

What buyers complain about

Functionality-Overall15%

“now nothing will come out”

Ingredients-Overall9%

“Formula Changed-Not the Same”

Allergies8%

“Irritated my skin”

Value For Money8%

“It is a bit pricey”

Moist/Dry5%

“becomes difficult to spread as the area is instantly dry”

Advertised Vs Actual Product4%

“Misleading”

Smell3%

“It doesnt have a strong fragrance that you might be sensitive to”

Motor Power3%

“It doesnt say how many pump to apply on the body”

Side Effects2%

“The burning during intercourse returned”

Ease Of Use2%

“wasn't able to use”

Top return reasons

Functionality-Overall19%
Motor Power19%
Advertised Vs Actual Product18%
Ingredients-Overall5%
Dispensing Mechanism5%
Smell4%
Leak-Proof3%
Texture/Consistency-Overall3%
Strength2%
Side Effects2%

Common questions

Is estradiol profitable to sell on Amazon United States?
The niche generates $58K/yr across 13 tracked products. 6 of 8 products launched in the last 360 days are still selling. 90-day search growth is -11.9%. Flapen's verdict: Skip it (44/100).
How competitive is the estradiol niche?
4 brands and 44 sellers compete. The top 5 products take 81% of clicks and top 5 brands hold 100% of demand.
What do buyers complain about in estradiol?
Top complaints mined from reviews: Functionality-Overall, Ingredients-Overall, Allergies. The return rate is 0.5%.
When does demand for estradiol peak?
Demand peaks in Jan–Feb–Mar–Apr; the busiest month runs 6.9× the quietest.
What does it cost to enter the estradiol niche?
Listings span $20.84–$69.38; the average listing price is $41.36 (sweet spot $15–$100). The average incumbent carries 334 reviews — the moat a new listing must climb.