Epo
FailPrices span $14.77–$527.67, mostly outside the sweet spot, so Epo is a Fail.
- Flapen Score
- 44 / 100Ranks 10,233 of 14,768 Health & Household niches · −5 vs the category median of 4944
- Market size
- $123K/yr50K searches / yr
- 90-day growth
- -4.6%search demand this quarter
- Competition
- 68%top-5 click share · 15 brands · 58 sellers
Flapen Score
Epo against its category
The dotted line is the Health & Household average. Past it, Epo is stronger. Inside it, weaker.
Market
The Epo market on Amazon at a glance
Shoppers on Amazon United States searched for Epo 50K times last year and spent an estimated $123K. The top 5 brands take 71% of clicks. Flapen scores it 44 out of 100, a Fail.
01 · Demand
An estimated 3.6% of those searches ended in a purchase.
Shoppers searched for this 50K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 3.6% of those searches ended in a purchase. Searches in the last 90 days moved -4.6% against the 90 days before. Searches, conversion and average price together put the market at an estimated $123K a year.
- Searches, last 12 months
- 50K
- Growth, 90 days vs prior 90
- -4.6%
- Conversion, latest week
- 3.6%
- Market size, estimated
- $123Ka year
- Peak month
- April1.4× the quietest month
- Top search term
- epo21K searches a year
02 · Price
A sale here is worth $68.26.
Listings sell for $68.26 on average, from $14.77 to $527.67. Amazon reports units sold in ranges. This niche sold 2K to 2K a year. The average listing sells 0 to 100 of them. At $68.26 that is $0 to $7K a year per listing.
- Average price
- $68.26inside the $15 to $100 sweet spot
- Price range
- $14.77–$527.67
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 2K–2K
- Units per listing a year
- 0–100
- Revenue per listing a year
- $0–$7K
- Returns
- 0.1%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is ads and reviews.
94% of listings pay for placement with sponsored ads. 94% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #693 within Endurance & Energy. It carries 3,387 reviews at 4.41 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 94%
- Prime listings
- 94%
- Out of stock, average day
- 0.0%
- Average rank
- #693in Endurance & Energy
- Average rating
- 4.41 starsAmazon United States average 4.42 stars
- Average reviews
- 3,387per listing
- Listings tracked
- 17
04 · Newcomers
Brands here are established.
The brands on the shelf have sold for 77 months on average, so the names here are established.
- Launched, last 12 months
- 0
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 77 months
Products
Top Epo products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 8, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
EPO-BOOST Natural Blood Builder Iron Supplement. RBC Support Made in USA with Echinacea & Dandelion Root helping VO2 Max Energy Endurance (1-Pack)
- Price
- $52.97
- Rating
- 4.2/5
- Reviews
- 888
- Age
- 15y ago

VO2-Boost Natural Endurance and Oxygen Supplement to Help VO2 max w/Rhodiola Rosea B12 and Alpha Lipoic Acid (120 Capsules) (30 Day Supply)
- Price
- $41.81
- Rating
- 4.3/5
- Reviews
- 212
- Age
- 15y ago

Inhale Lung Trainer | Breathing Exercise Device for Lungs | Made in USA | Lung Exerciser Device | Breathing Trainer | Adjustable Resistance | Medical Grade Silicone Mouthpiece | Carrying Case included
- Price
- $19.61
- Rating
- 4.3/5
- Reviews
- 2,013
- Age
- 5y ago

Pure Encapsulations E.P.O. (Evening Primrose Oil) | Hypoallergenic Dietary Supplement Containing 9% GLA | 100 Softgel Capsules
- Price
- $31.88
- Rating
- 4.7/5
- Reviews
- 475
- Age
- 17y ago

FIRST ENDURANCE OptygenHP - Premium Endurance Supplement | Boost Power | Increase Performance and Endurance | Improves Oxygen Utilization| 120 Capsules
- Price
- $77.31
- Rating
- 4.7/5
- Reviews
- 127
- Age
- 6y ago
Trending
estimated 90-day click momentum
Maximus Lung Trainer Device | VO2 Max Trainer for Endurance Training Breathing Exercise & Lung Capacity Portable Resistance Exerciser for Supporting Fitness & Oxygen
- Price
- $58.76
- Rating
- 4.1/5
- Reviews
- 90
- Age
- 2y ago

Freak Shake Grit Fuel Endurance Activator | Epicatechin & IsoQuercetin | Bioenergetic Optimizer for Cardio Training & Peak VO2 Max | 30 Day Supply
- Price
- $32.51
- Rating
- 4.5/5
- Reviews
- 33
- Age
- 2y ago

FIRST ENDURANCE OptygenHP - Premium Endurance Supplement | Boost Power | Increase Performance and Endurance | Improves Oxygen Utilization| 120 Capsules
- Price
- $77.31
- Rating
- 4.7/5
- Reviews
- 127
- Age
- 6y ago

Pure Encapsulations E.P.O. (Evening Primrose Oil) | Hypoallergenic Dietary Supplement Containing 9% GLA | 250 Softgel Capsules
- Price
- $69.62
- Rating
- 4.7/5
- Reviews
- 475
- Age
- 18y ago

Nutricost Nitric Oxide Booster 2250mg 180 Capsules - 750mg Per Casule 60 Servings - Gluten Free and Non-GMO
- Price
- $14.77
- Rating
- 4.5/5
- Reviews
- 13,609
- Age
- 4y ago
Newest
by launch date
Happy Runner: Pre-Run - Enhances Breathing Improved Oxygen Delivery Respiratory Efficiency Boosts Endurance Nitric Oxide Booster Improved Blood Flow Running Supplements Cardiovascular Health
- Price
- $37.00
- Rating
- 4.2/5
- Reviews
- 29
- Age
- 1y ago

Maximus Lung Trainer Device | VO2 Max Trainer for Endurance Training Breathing Exercise & Lung Capacity Portable Resistance Exerciser for Supporting Fitness & Oxygen
- Price
- $58.76
- Rating
- 4.1/5
- Reviews
- 90
- Age
- 2y ago

Freak Shake Grit Fuel Endurance Activator | Epicatechin & IsoQuercetin | Bioenergetic Optimizer for Cardio Training & Peak VO2 Max | 30 Day Supply
- Price
- $32.51
- Rating
- 4.5/5
- Reviews
- 33
- Age
- 2y ago

Novex Biotech Oxydrene NAD+ Enhancer - Natural Supplement Promoting Metabolism and Cardiovascular Support for Men and Women - (60 Capsules)
- Price
- $38.21
- Rating
- 4.4/5
- Reviews
- 505
- Age
- 4y ago

Nutricost Nitric Oxide Booster 2250mg 180 Capsules - 750mg Per Casule 60 Servings - Gluten Free and Non-GMO
- Price
- $14.77
- Rating
- 4.5/5
- Reviews
- 13,609
- Age
- 4y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 68% of clicks. Leaders hold, but buyers still shop past them.
Brands
15 rising
Sellers
58
Est. top-5 brand share
71%
Top 20: 100%
Est. top-5 click share
68%
Top 20: 100%
Open market
23%
- EPO-Boost28%
- VO2-Boost13%
- Inhale12%
- Pure Encapsulations12%
- FIRST ENDURANCE7%
- Novex Biotech6%
Demand
Epo search demand
Weekly searches over the year, seasonality beneath. Pick a range.
No pronounced peak months · busiest ÷ quietest = 1.4×
Search terms
Top Epo search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- epo21K/yr
- vo2 max13K/yr
- epo boost5K/yr
- vo2 boost2K/yr
- vo23K/yr
- vo2 max supplement4K/yr
- v02 max3K/yr
Reviews and returns
What reviews say buyers love and hate about Epo
We read the reviews and the return reasons for every product selling here.
“Didn't work for me”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
23 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Epo questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









