---
title: "Evening Primrose Oil 500mg — $18K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/evening-primrose-oil-500mg"
last_updated: "2026-08-10T07:17:53.711Z"
locale: en
meta:
description: "Niche score 40/100 · $18K/yr market · 10K searches/yr · $18.04 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 40/100 · $18K/yr market · 10K searches/yr · $18.04 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Evening Primrose Oil 500mg — $18K/yr Amazon US Niche (2026) - Flapen"
---
# **evening primrose oil 500mg**
**Skip it**
A small market ($18K/yr) — this niche doesn't clear our bar today.
Market size 5Growth 22Conversion 88Competition 18Returns 100Price range 76Avg price 83Brand share 35Review moat 25Quality gap 21
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Conversion**
**Great****10.3%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Great****$18.04**
avg listing price — sweet spot $15–$100
**Price range**
**Great****$8.01–$37.64**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Okay****84%**
top-5 brand share — brands hold most of the demand
**Review moat**
**Bad****4,624.5**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Bad****-6.2%**
90-day search growth — must beat 0% to launch
**Quality gap**
**Bad****4.7★**
avg incumbent rating — lower means beatable quality
**Competition**
**Bad****78%**
top-5 click share — a locked-up shelf
**Market size**
**Bad****$18K**
$18K/yr · 10K searches
According to Flapen's Amazon United States niche tracking, evening primrose oil 500mg is a $18K/yr Amazon United States market (10K searches/yr). The top 5 brands hold 84% of demand. Demand peaks in Apr. Verdict: Skip it — 40/100.
Data updated Jul 27, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **evening primrose oil 500mg market data**
- **Units sold / yr**
- **1K–1K**
- avg 0–100/product
- **Revenue / yr**
- **$18K–$23K**
- units × avg price
- **Conversion rate**
- **10.3%**
- **Avg BSR**
- **#221**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **64%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **126 months**
- **Avg seller age**
- **156 days**
## **Competition & brand share**
The top 5 products capture 78% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**11 **—flat
**Sellers**
**559**
**Top-5 brand share**
**84%**
Top 20: 100%
**Top-5 click share**
**78%**
Top 20: 100%
**Open market**
**11%**
- NOW Foods33% - Solgar18% - 365 by Whole Foods Market15% - Sports Research13% - Nature's Bounty5% - Swanson5% - Open — no brand owns it (5 brands, 11%)
## **Demand & seasonality**
Weekly Amazon search volume, last 99 weeks — -6.2% search growth over the last 90 days.
500300Spike '25Prime Day '25Holiday '25Spike '26 seasonDecMarJunAugNovMarMay
Peak months: Apr · busiest ÷ quietest = 1.9×
[**Open Trend **](https://flapen.com/research/us/health-household/evening-primrose-oil-500mg/trend)
## **Top evening primrose oil 500mg search terms**
- **evening primrose oil 500mg**8K/yr-1.9%11.2% conv. - **primrose oil capsules 500mg**783/yr-31.8%12.4% conv. - **evening primrose oil capsules 500mg**822/yr-33.3%10.9% conv. [**All search terms **](https://flapen.com/research/us/health-household/evening-primrose-oil-500mg/search-terms)
## **Top evening primrose oil 500mg 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%5%$91110%$2K15%$3K20%$4K1001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 14 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Solgar Evening Primrose Oil 500 mg 180 Softgels - Promotes Healthy Skin & Cardiovascular Health - Nutritional Support for Women - Gluten Free Dairy Free - 180 Servings**Solgar**$13.97**4.6★1,231 rev](https://www.amazon.com/dp/B00020IDB6) [2**NOW Foods Supplements Evening Primrose Oil 500 mg with Naturally Occurring GLA (Gamma-Linolenic Acid) 100 Softgels**NOW Foods**$8.01**4.7★4,246 rev](https://www.amazon.com/dp/B00024CS04) [3**NOW Foods Supplements Evening Primrose Oil 500 mg with Naturally Occurring GLA (Gamma-Linolenic Acid) 250 Softgels**NOW Foods**$17.95**4.7★4,246 rev](https://www.amazon.com/dp/B000T3OSNS) [4**365 by Whole Foods Market Evening Primrose Oil 500 mg 120 Count**365 by Whole Foods Market**$16.03**4.7★223 rev](https://www.amazon.com/dp/B074H67HDK) [5**Sports Research Evening Primrose Oil (500mg) Cold-Pressed with No fillers or Artificial Ingredients Non-GMO Tested - Gluten & Soy Free (240 Liquid Softgels)**Sports Research**$21.55**4.6★34,557 rev](https://www.amazon.com/dp/B07DWFXD7X)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**OmniBiotics Organic Evening Primrose Oil for Women Clinical Strength 1500mg per Capsule 10% GLA Cold-Pressed Non-GMO Hormone Balance for Women 120 Vegan Softgel Capsules**OmniBiotics**$37.64**2,023 rev6y ago](https://www.amazon.com/dp/B07YF3TQ2K) [**Nutricost Evening Primrose Oil 1 300mg 120 Softgels Cold Pressed**Nutricost**$17.61**4,747 rev8y ago](https://www.amazon.com/dp/B07FPBQ31W) [**Sports Research Evening Primrose Oil (500mg) Cold-Pressed with No fillers or Artificial Ingredients Non-GMO Tested - Gluten & Soy Free (240 Liquid Softgels)**Sports Research**$21.55**34,557 rev8y ago](https://www.amazon.com/dp/B07DWFXD7X) [**NOW Foods Supplements Evening Primrose Oil 1000 mg Cold Pressed Hexane Free Vegan Formula 90 Veg Softgels**NOW Foods**$17.13**1,821 rev8y ago](https://www.amazon.com/dp/B078TGP8BK) [**365 by Whole Foods Market Evening Primrose Oil 500 mg 120 Count**365 by Whole Foods Market**$16.03**223 rev8y ago](https://www.amazon.com/dp/B074H67HDK)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**NOW Foods Supplements Evening Primrose Oil 1000 mg Cold Pressed Hexane Free Vegan Formula 90 Veg Softgels**NOW Foods**$17.13**4.7★**▲ 155%**](https://www.amazon.com/dp/B078TGP8BK) [**Swanson Evening Primrose Oil (Omegatru) 500 Milligrams 100 Sgels**Swanson**$13.07**4.8★**▲ 115%**](https://www.amazon.com/dp/B00068JGJM) [**365 by Whole Foods Market Evening Primrose Oil 500 mg 120 Count**365 by Whole Foods Market**$16.03**4.7★**▲ 19%**](https://www.amazon.com/dp/B074H67HDK) [**NOW Foods Supplements Evening Primrose Oil 500 mg with Naturally Occurring GLA (Gamma-Linolenic Acid) 100 Softgels**NOW Foods**$8.01**4.7★**▲ 15%**](https://www.amazon.com/dp/B00024CS04) [**Solgar Evening Primrose Oil 500 mg 180 Softgels - Promotes Healthy Skin & Cardiovascular Health - Nutritional Support for Women - Gluten Free Dairy Free - 180 Servings**Solgar**$13.97**4.6★**▲ 13%**](https://www.amazon.com/dp/B00020IDB6)
**~~View all trending →~~**
## **What buyers say about evening primrose oil 500mg**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**16%
*“Great quality, no bad taste and easy to swallow”*
**Menstrual Issues**10%
*“Its the best if you are going through menopause”*
**Value For Money**8%
*“Very good deal on a highly rated EPO”*
**Hormonal Balance**7%
*“Ive been taking these mostly for hormone balance and skin, and theyve been easy to stick with”*
**Advertised Vs Actual Product**6%
*“That this product arrived as was described”*
**Vitamin**6%
*“A good addition to my daily vitamins”*
**Size-Overall**4%
*“Good size and quality”*
**Efficiency**3%
*“Works Great”*
**Smell**3%
*“I can highly talk about the smell that it takes away no arm odor anymore thank you”*
**Strength**3%
*“Am strong”*
### **What buyers complain about **
**Value For Money**24%
*“it usually costs more”*
**Side Effects**14%
*“I took these and it gave me a massive headache, blood vision, loss of peripheral vision and really freaked me out really badly”*
**Durability**7%
*“After a week of taking it I started breaking out every where my face my body”*
**Sleep Quality**7%
*“Caused too much negative issues with sleep and overall wellbeing”*
**Dosage**6%
*“This one was a waste of my money no mater how many I took in a day it did not work”*
**Ease Of Chewing/Swallowing**4%
*“difficult to swallow due to size so I just break them open”*
**Allergies**2%
*“However, it makes me slightly nauseous”*
**Size-Overall**2%
*“The pill is on the larger side”*
**Ingredients-Overall**2%
*“So I wont get to use this supplement”*
**Quality-Overall**2%
*“This is not a good brand”*
### **Top return reasons **
**Dosage**33%
**Size-Overall**33%
**Vitamin**17%
**Smell**17%
## **Common questions**
- **Is evening primrose oil 500mg profitable to sell on Amazon United States?**
- The niche generates $18K/yr across 14 tracked products. 90-day search growth is -6.2%. Flapen's verdict: Skip it (40/100).
- **How competitive is the evening primrose oil 500mg niche?**
- 11 brands and 559 sellers compete. The top 5 products take 78% of clicks and top 5 brands hold 84% of demand.
- **What do buyers complain about in evening primrose oil 500mg?**
- Top complaints mined from reviews: Value For Money, Side Effects, Durability. The return rate is 0.0%.
- **When does demand for evening primrose oil 500mg peak?**
- Demand peaks in Apr; the busiest month runs 1.9× the quietest.
- **What does it cost to enter the evening primrose oil 500mg niche?**
- Listings span $8.01–$37.64; the average listing price is $18.04 (sweet spot $15–$100). The average incumbent carries 4,625 reviews — the moat a new listing must climb.
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