---
title: "epo — Niche Verdict: Skip it (39/100) | Amazon United States - Flapen"
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last_updated: "2026-07-10T03:39:27.596Z"
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  description: "a small market ($123K/yr) — epo doesn't clear our bar today."
  "og:description": "a small market ($123K/yr) — epo doesn't clear our bar today."
  "og:title": "epo — Niche Verdict: Skip it (39/100) | Amazon United States - Flapen"
---

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# **epo**

**Skip it****39/100 **

a small market ($123K/yr) — epo doesn't clear our bar today.

**Market/yr**

**$123K**

**Growth (1y)**

**+63.9%**

**Products**

**17**

**Brands**

**15**

was 13 a year ago

**Sellers**

**58**

**Price range**

**$14.77–$527.67**

**Returns**

**0.1%**

**Rating**

**4.4★**

**Skip it**

Scored 39/100 across market size, growth, competition, quality gap, and returns.

Market sizeGrowthCompetitionQuality gapReturns

Market size

**6**

 ×0.30

Growth

**54**

 ×0.30

Competition

**33**

 ×0.20

Quality gap

**49**

 ×0.10

Returns

**99**

 ×0.10

## **Demand**

Weekly Amazon search volume, last 104 weeks — +63.9% year over year.

1K696Spike '24Spike '25Prime Day '25Spike '26Jul '24Nov '24Mar '25Jul '25Nov '25Mar '26

## **Seasonality**

Monthly demand index across the year — 1.00 is average.

JFMAMJJASOND

No pronounced peak months · busiest ÷ quietest = 1.4×

## **Competition**

- EPO-Boost28% - VO2-Boost13% - Inhale12% - Pure Encapsulations12% - FIRST ENDURANCE7% - Novex Biotech6% - Other (9 brands)23%

The top 5 products take 68% of clicks — established leaders, but buyers still shop beyond them. 15 brands and 58 sellers compete here.

**Brands**

**15 **▲rising

was 13 a year ago

**Sellers**

**58**

**Top 5 brand share**

**71%**

#ProductBrandPriceRatingReviewsClick shareTrend

1
![EPO-BOOST Natural Blood Builder Iron Supplement. RBC Support Made in USA with Echinacea & Dandelion Root helping VO2 Max Energy Endurance (1-Pack)](https://m.media-amazon.com/images/I/41NJ01IONeL.jpg) [**EPO-BOOST Natural Blood Builder Iron Supplement. RBC Support Made in USA with Echinacea & Dandelion Root helping VO2 Max Energy Endurance (1-Pack)**](https://www.amazon.com/dp/B004U2JR8K)

EPO-Boost$52.974.2★88828%▲rising

2
![VO2-Boost Natural Endurance and Oxygen Supplement to Help VO2 max w/Rhodiola Rosea B12 and Alpha Lipoic Acid (120 Capsules) (30 Day Supply)](https://m.media-amazon.com/images/I/41smOSSVLmL.jpg) [**VO2-Boost Natural Endurance and Oxygen Supplement to Help VO2 max w/Rhodiola Rosea B12 and Alpha Lipoic Acid (120 Capsules) (30 Day Supply)**](https://www.amazon.com/dp/B004JAPGHO)

VO2-Boost$41.814.3★21213%▼falling

3
![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](https://m.media-amazon.com/images/I/412H5FTLz6L.jpg) [**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**](https://www.amazon.com/dp/B091L441KW)

Inhale$19.614.3★2,01312%▼falling

4
![Pure Encapsulations E.P.O. (Evening Primrose Oil) | Hypoallergenic Dietary Supplement Containing 9% GLA | 100 Softgel Capsules](https://m.media-amazon.com/images/I/41BJO+7+VNL.jpg) [**Pure Encapsulations E.P.O. (Evening Primrose Oil) | Hypoallergenic Dietary Supplement Containing 9% GLA | 100 Softgel Capsules**](https://www.amazon.com/dp/B0016LBH22)

Pure Encapsulations$31.884.7★4759%▲rising

5
![FIRST ENDURANCE OptygenHP - Premium Endurance Supplement | Boost Power | Increase Performance and Endurance | Improves Oxygen Utilization| 120 Capsules](https://m.media-amazon.com/images/I/31Kg0yTpwOL.jpg) [**FIRST ENDURANCE OptygenHP - Premium Endurance Supplement | Boost Power | Increase Performance and Endurance | Improves Oxygen Utilization| 120 Capsules**](https://www.amazon.com/dp/B000VWBAGU)

FIRST ENDURANCE$77.314.7★1277%▲rising

6
![Novex Biotech Oxydrene NAD+ Enhancer - Natural Supplement Promoting Metabolism and Cardiovascular Support for Men and Women - (60 Capsules)](https://m.media-amazon.com/images/I/41kZMYZrCoL.jpg) [**Novex Biotech Oxydrene NAD+ Enhancer - Natural Supplement Promoting Metabolism and Cardiovascular Support for Men and Women - (60 Capsules)**](https://www.amazon.com/dp/B09JFZ25D1)

Novex Biotech$38.214.4★5056%▲rising

7
![PrimaForce Peak O2 Workout Supplement 120 Grams - Proprietary Blend Non-GMO Vegan and Gluten Free](https://m.media-amazon.com/images/I/51o6VFybEiL.jpg) [**PrimaForce Peak O2 Workout Supplement 120 Grams - Proprietary Blend Non-GMO Vegan and Gluten Free**](https://www.amazon.com/dp/B01LWS7AW8)

Primaforce$17.104.4★6733%—flat

8
![Pure Encapsulations E.P.O. (Evening Primrose Oil) | Hypoallergenic Dietary Supplement Containing 9% GLA | 250 Softgel Capsules](https://m.media-amazon.com/images/I/41cQTduAPeL.jpg) [**Pure Encapsulations E.P.O. (Evening Primrose Oil) | Hypoallergenic Dietary Supplement Containing 9% GLA | 250 Softgel Capsules**](https://www.amazon.com/dp/B0015YJPCE)

Pure Encapsulations$69.624.7★4753%▲rising

9
![Maximus Lung Trainer Device | VO2 Max Trainer for Endurance Training Breathing Exercise & Lung Capacity Portable Resistance Exerciser for Supporting Fitness & Oxygen](https://m.media-amazon.com/images/I/417YrVq-eDL.jpg) [**Maximus Lung Trainer Device | VO2 Max Trainer for Endurance Training Breathing Exercise & Lung Capacity Portable Resistance Exerciser for Supporting Fitness & Oxygen**](https://www.amazon.com/dp/B0CLHHSSX6)

Maximus$58.764.1★903%▲rising

10

![Freak Shake Grit Fuel Endurance Activator | Epicatechin & IsoQuercetin | Bioenergetic Optimizer for Cardio Training & Peak VO2 Max | 30 Day Supply](https://m.media-amazon.com/images/I/315wv2oYIxL.jpg) [**Freak Shake Grit Fuel Endurance Activator | Epicatechin & IsoQuercetin | Bioenergetic Optimizer for Cardio Training & Peak VO2 Max | 30 Day Supply**](https://www.amazon.com/dp/B0CH1QJDLS)

Freak Shake$32.514.5★333%▲rising

11

![Nutricost Nitric Oxide Booster 2250mg 180 Capsules - 750mg Per Casule 60 Servings - Gluten Free and Non-GMO](https://m.media-amazon.com/images/I/41GcQHM-hbL.jpg) [**Nutricost Nitric Oxide Booster 2250mg 180 Capsules - 750mg Per Casule 60 Servings - Gluten Free and Non-GMO**](https://www.amazon.com/dp/B09B4DWNYQ)

Nutricost$14.774.5★13,6093%▲rising

12

![EPO Equine Formula 360 Servings Equine Endurance Supplement 2.54 lbs](https://m.media-amazon.com/images/I/419rZyZVldL.jpg) [**EPO Equine Formula 360 Servings Equine Endurance Supplement 2.54 lbs**](https://www.amazon.com/dp/B0099RMG4S)

EPO-EQUINE$527.674.2★822%—flat

13

![SNAC HypOxygen Oxygenation Enhancement Support Formula 90 Capsules](https://m.media-amazon.com/images/I/41lphUPlmXL.jpg) [**SNAC HypOxygen Oxygenation Enhancement Support Formula 90 Capsules**](https://www.amazon.com/dp/B00380DUF6)

SNAC$28.534.3★1372%—flat

14

![SPORTLEGS Pre-Exercise Metabolic Primer for Runners Cyclists and Endurance Athletes - Helps Muscles Use and Recycle Lactate for Smoother Longer Efforts - NSF Certified for Sport - 120 Capsules](https://m.media-amazon.com/images/I/51llyR1mQSL.jpg) [**SPORTLEGS Pre-Exercise Metabolic Primer for Runners Cyclists and Endurance Athletes - Helps Muscles Use and Recycle Lactate for Smoother Longer Efforts - NSF Certified for Sport - 120 Capsules**](https://www.amazon.com/dp/B002VTWW3Q)

SPORTLEGS$34.294.6★3,6312%▼falling

15

![Sports Research Evening Primrose Supplement from Cold Pressed Oil - Softgels for Womens Health & Skin Health - Gluten Free & Non-GMO GLA - High Potency 1300mg 120 Count](https://m.media-amazon.com/images/I/41NjA4VYQLL.jpg) [**Sports Research Evening Primrose Supplement from Cold Pressed Oil - Softgels for Womens Health & Skin Health - Gluten Free & Non-GMO GLA - High Potency 1300mg 120 Count**](https://www.amazon.com/dp/B00NH5AK2S)

Sports Research$20.344.6★34,5162%▼falling

**~~Showing 15 of 17 — show all ~~**

## **Product shelf**

All 17 tracked products in this niche.

Top sellersNewestTrending

[![EPO-BOOST Natural Blood Builder Iron Supplement. RBC Support Made in USA with Echinacea & Dandelion Root helping VO2 Max Energy Endurance (1-Pack)](https://m.media-amazon.com/images/I/41NJ01IONeL.jpg)**EPO-BOOST Natural Blood Builder Iron Supplement. RBC Support Made in USA with Echinacea & Dandelion Root helping VO2 Max Energy Endurance (1-Pack)** EPO-Boost**$52.97**4.2★888 reviews](https://www.amazon.com/dp/B004U2JR8K) [![VO2-Boost Natural Endurance and Oxygen Supplement to Help VO2 max w/Rhodiola Rosea B12 and Alpha Lipoic Acid (120 Capsules) (30 Day Supply)](https://m.media-amazon.com/images/I/41smOSSVLmL.jpg)**VO2-Boost Natural Endurance and Oxygen Supplement to Help VO2 max w/Rhodiola Rosea B12 and Alpha Lipoic Acid (120 Capsules) (30 Day Supply)** VO2-Boost**$41.81**4.3★212 reviews](https://www.amazon.com/dp/B004JAPGHO) [![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](https://m.media-amazon.com/images/I/412H5FTLz6L.jpg)**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** Inhale**$19.61**4.3★2,013 reviews](https://www.amazon.com/dp/B091L441KW) [![Pure Encapsulations E.P.O. (Evening Primrose Oil) | Hypoallergenic Dietary Supplement Containing 9% GLA | 100 Softgel Capsules](https://m.media-amazon.com/images/I/41BJO+7+VNL.jpg)**Pure Encapsulations E.P.O. (Evening Primrose Oil) | Hypoallergenic Dietary Supplement Containing 9% GLA | 100 Softgel Capsules** Pure Encapsulations**$31.88**4.7★475 reviews](https://www.amazon.com/dp/B0016LBH22) [![FIRST ENDURANCE OptygenHP - Premium Endurance Supplement | Boost Power | Increase Performance and Endurance | Improves Oxygen Utilization| 120 Capsules](https://m.media-amazon.com/images/I/31Kg0yTpwOL.jpg)**FIRST ENDURANCE OptygenHP - Premium Endurance Supplement | Boost Power | Increase Performance and Endurance | Improves Oxygen Utilization| 120 Capsules** FIRST ENDURANCE**$77.31**4.7★127 reviews](https://www.amazon.com/dp/B000VWBAGU) [![Novex Biotech Oxydrene NAD+ Enhancer - Natural Supplement Promoting Metabolism and Cardiovascular Support for Men and Women - (60 Capsules)](https://m.media-amazon.com/images/I/41kZMYZrCoL.jpg)**Novex Biotech Oxydrene NAD+ Enhancer - Natural Supplement Promoting Metabolism and Cardiovascular Support for Men and Women - (60 Capsules)** Novex Biotech**$38.21**4.4★505 reviews](https://www.amazon.com/dp/B09JFZ25D1) [![PrimaForce Peak O2 Workout Supplement 120 Grams - Proprietary Blend Non-GMO Vegan and Gluten Free](https://m.media-amazon.com/images/I/51o6VFybEiL.jpg)**PrimaForce Peak O2 Workout Supplement 120 Grams - Proprietary Blend Non-GMO Vegan and Gluten Free** Primaforce**$17.10**4.4★673 reviews](https://www.amazon.com/dp/B01LWS7AW8) [![Pure Encapsulations E.P.O. (Evening Primrose Oil) | Hypoallergenic Dietary Supplement Containing 9% GLA | 250 Softgel Capsules](https://m.media-amazon.com/images/I/41cQTduAPeL.jpg)**Pure Encapsulations E.P.O. (Evening Primrose Oil) | Hypoallergenic Dietary Supplement Containing 9% GLA | 250 Softgel Capsules** Pure Encapsulations**$69.62**4.7★475 reviews](https://www.amazon.com/dp/B0015YJPCE)

## **Reviews**

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

### **What buyers love **

**Quality-Overall**17%

*“I've had it for about a year now, good quality, works well”*

**Efficiency**9%

*“found them to be highly effective”*

**Value For Money**9%

*“Low price”*

**Advertised Vs Actual Product**9%

*“Worked as advertised”*

**Breathability**7%

*“It helps a lot holding your breath”*

**Energy Level**6%

*“helps with energy”*

**Vitamin**5%

*“Great supplement”*

**Nutritional Content**3%

*“Great quality supplement”*

**Muscle Pain Relief**3%

*“This has helped my muscles recover faster”*

**Menstrual Issues**2%

*“it has helped tremendously with my menstrual comfort”*

### **What buyers complain about **

**Functionality-Overall**9%

*“Didn't work for me”*

**Dosage**8%

*“Low volume per dose”*

**Side Effects**6%

*“Gave me anemic symtoms”*

**Value For Money**5%

*“Basically a waste of money”*

**Acid Regulator/Stomach Ache Relief**5%

*“my stomach dont agree”*

**Instructions/User Manual/Troubleshooting**4%

*“Delivery Instructions not followed”*

**Blood Pressure**3%

*“my diastolic BP was still just not getting where I wanted it”*

**Taste-Overall**3%

*“No taste-large”*

**Vegan/Organic**3%

*“is not Halal or Kosher friendly”*

**Size-Overall**3%

*“are LONG”*

#### **Top return reasons**- Functionality-Overall21% - Breathability18% - Size-Overall12% - Advertised Vs Actual Product9% - Defective Material/Parts7% - Comfort-Overall7% - Ease Of Use5% - Instructions/User Manual/Troubleshooting4% - Quality-Overall4% - Product Condition3%