---
title: "C15 0 Fatty Acid Supplement — $520K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/c15-0-fatty-acid-supplement"
last_updated: "2026-08-06T16:46:19.615Z"
locale: en
meta:
description: "Niche score 65/100 · $520K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 65/100 · $520K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "C15 0 Fatty Acid Supplement — $520K/yr Amazon US Niche (2026) - Flapen"
---
# **c15 0 fatty acid supplement**
**Worth a look**
Shows low returns (0.0%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 61Growth 71Conversion 71Competition 32Returns 100Price range 64Avg price 95Brand share 65Review moat 64Quality gap 60
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Avg price**
**Incredible****$42.58**
avg listing price — sweet spot $15–$100
**Growth**
**Good****+53.6%**
90-day search growth — must beat 0% to launch
**Conversion**
**Good****6.5%**
search→purchase rate — share of searches ending in a sale
**Brand share**
**Good****66%**
top-5 brand share — brands hold most of the demand
**Review moat**
**Good****923.94**
avg incumbent reviews — the moat a new listing must climb
**Price range**
**Good****$8.26–$140.77**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Good****$520K**
$520K/yr · 188K searches
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Competition**
**Okay****66%**
top-5 click share — leaders hold, buyers still browse
**Signals**[** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500") [** Out of Stock**](https://flapen.com/research/niches?market=us&signal=out_of_stock "OOS rate > 10%")
According to Flapen's Amazon United States niche tracking, c15 0 fatty acid supplement is a $520K/yr Amazon United States market (188K searches/yr). The top 5 brands hold 66% of demand. Demand peaks in Sep. Verdict: Worth a look — 65/100.
Data updated Jul 26, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **c15 0 fatty acid supplement market data**
- **Units sold / yr**
- **8K–10K**
- avg 500–750/product
- **Revenue / yr**
- **$341K–$426K**
- units × avg price
- **Conversion rate**
- **6.5%**
- **Avg BSR**
- **#484**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **94%**
- **Out of stock**
- **10.7%**
- **Avg brand age**
- **77 months**
- **Avg seller age**
- **157 days**
## **Competition & brand share**
The top 5 products take 66% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**16 **▲rising
**Sellers**
**36**
**Top-5 brand share**
**66%**
Top 20: 100%
**Top-5 click share**
**66%**
Top 20: 100%
**Open market**
**27%**
- Stay-Well Naturals20% - Fatty1515% - Samareniq15% - DNOUHN9% - Nokvba7% - Pure Encapsulations7%
## **Demand & seasonality**
Weekly Amazon search volume, last 98 weeks — +53.6% search growth over the last 90 days.
9K7KSpike '24Spike '25Prime Day '25Black Friday '25Spike '26 seasonDecMarJunAugNovMarMay
Peak months: Sep · busiest ÷ quietest = 2.5×
[**Open Trend **](https://flapen.com/research/us/health-household/c15-0-fatty-acid-supplement/trend)
## **Top c15 0 fatty acid supplement search terms**
- **pentadecanoic acid**50K/yr+67.7%6.3% conv. - **c15 fatty acid supplement**44K/yr+41.7%4.4% conv. - **pentadecanoic acid supplement**23K/yr+45.0%6.8% conv. - **c15 0 fatty acid supplement**13K/yr+62.1%4.2% conv. - **c15 supplement**14K/yr+22.7%2.4% conv. - **c15:0**8K/yr+136.8%3.0% conv. - **c 15 fatty acid supplement**7K/yr+67.3%4.6% conv. - **pentadecanoic acid supplement c15**7K/yr+37.4%5.7% conv. - **c15 0 supplement**3K/yr+100.8%3.7% conv. - **c-15 fatty acid supplement**3K/yr+87.1%6.3% conv. [**All search terms **](https://flapen.com/research/us/health-household/c15-0-fatty-acid-supplement/search-terms)
## **Top c15 0 fatty acid supplement 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%$52K20%$104K30%$156K40%$208K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 18 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**C15:0 Pentadecanoic Acid Supplement | Longevity Cellular & Membrane Support Micro-Granule Enhanced Absorption Phosphatidylcholine L-Carnitine Ubiquinol CoQ10 & Tocotrienols 120ct**Stay-Well Naturals**$47.14**4.5★77 rev](https://www.amazon.com/dp/B0GKPTBN59) [2**Fatty15 C15:0 Pentadecanoic Acid Healthy Aging Supplement - 3 Month Supply**Fatty15**$140.77**4.3★796 rev](https://www.amazon.com/dp/B0DNBL1D2J) [3**Samareniq Pentadecanoic Acid Supplement | 300mg C15:0 Formula | High-Altitude Grass-Fed Sheep Milk Source | Blister-Sealed Capsules (1 Pack)**Samareniq**$24.46**4.7★135 rev](https://www.amazon.com/dp/B0G6CW2LZG) [4**DNOUHN Pentadecanoic Acid Pentadecanoic Acid Formula Supplement Sourced from High-Altitude Sheep Milk 60 Capsules**DNOUHN**$31.17**4.1★151 rev](https://www.amazon.com/dp/B0FXWBN35L) [5**Pure Encapsulations Pantothenic Acid | Hypoallergenic Supplement Supports Cellular Energy Production Adrenal and Cardiovascular Health* | 120 Capsules**Pure Encapsulations**$25.28**4.6★633 rev](https://www.amazon.com/dp/B003GCGLX4)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Codeage Liposomal C15:0 Pentadecanoic Acid CoQ10 Astaxanthin 30 ct**Codeage**$39.98**16 rev1mo ago](https://www.amazon.com/dp/B0H3W6BWS6) [**Engtozl Pentadecanoic Acid C15:0 Supplement Sourced from High-Altitude Goat Milk - 60 Capsules**Engtozl**$32.95**32 rev1mo ago](https://www.amazon.com/dp/B0H35KTGX9) [**Lithorvexalyn Pentadecanoic Acid C15:0 Supplement High Altitude Sheep Milk Sourced 120 Tablets**Lithorvexalyn**$36.44**55 rev3mo ago](https://www.amazon.com/dp/B0GYNP83QW) [**DTORUNI Pentadecanoic Acid Liposome Supplement C15:0 Supplement Cellular Membrane Support with L-Carnitine & Ubiquinol CoQ10-90 Capsules**DTORUNI**$38.50**54 rev3mo ago](https://www.amazon.com/dp/B0GVSBTL8Y) [**C15:0 Pentadecanoic Acid Supplement | Longevity Cellular & Membrane Support Micro-Granule Enhanced Absorption Phosphatidylcholine L-Carnitine Ubiquinol CoQ10 & Tocotrienols 120ct**Stay-Well Naturals**$47.14**77 rev4mo ago](https://www.amazon.com/dp/B0GKPTBN59)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**DTORUNI Pentadecanoic Acid Liposome Supplement C15:0 Supplement Cellular Membrane Support with L-Carnitine & Ubiquinol CoQ10-90 Capsules**DTORUNI**$38.50**4.6★**▲ 111%**](https://www.amazon.com/dp/B0GVSBTL8Y) [**Lithorvexalyn Pentadecanoic Acid C15:0 Supplement High Altitude Sheep Milk Sourced 120 Tablets**Lithorvexalyn**$36.44**4.6★**▲ 111%**](https://www.amazon.com/dp/B0GYNP83QW) [**Engtozl Pentadecanoic Acid C15:0 Supplement Sourced from High-Altitude Goat Milk - 60 Capsules**Engtozl**$32.95**4.2★**▲ 110%**](https://www.amazon.com/dp/B0H35KTGX9) [**Codeage Liposomal C15:0 Pentadecanoic Acid CoQ10 Astaxanthin 30 ct**Codeage**$39.98**4.4★**▲ 109%**](https://www.amazon.com/dp/B0H3W6BWS6) [**C15:0 Pentadecanoic Acid Supplement | Longevity Cellular & Membrane Support Micro-Granule Enhanced Absorption Phosphatidylcholine L-Carnitine Ubiquinol CoQ10 & Tocotrienols 120ct**Stay-Well Naturals**$47.14**4.5★**▲ 96%**](https://www.amazon.com/dp/B0GKPTBN59)
**~~View all trending →~~**
## **What buyers say about c15 0 fatty acid supplement**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**15%
*“Excellent quality and easy to take”*
**Value For Money**10%
*“Good value”*
**Energy Level**8%
*“my energy level has improved dramatically”*
**Vitamin**6%
*“Great way to simplify your vitamin routine”*
**Nutritional Content**6%
*“Great supplement”*
**Ease Of Use**5%
*“Easy to take”*
**Ingredients-Overall**5%
*“Love the ingredients”*
**Side Effects**5%
*“no side effects”*
**Ease Of Chewing/Swallowing**5%
*“easy to chew”*
**Focus Enhancement**3%
*“the focus is clear”*
### **What buyers complain about **
**Value For Money**16%
*“Waste of money”*
**Dosage**7%
*“Small amount of powder”*
**Functionality-Overall**6%
*“No results”*
**Advertised Vs Actual Product**5%
*“Clearly not marked made in USA as indicated in the product description and pictures”*
**Certifications**4%
*“the box does not show any logos or proof of third party testing”*
**Side Effects**4%
*“I started having some side effects”*
**Allergies**3%
*“Can be allergic to it”*
**Ingredients-Overall**3%
*“Suspicious ingredients, not clean as claimed”*
**Vegan/Organic**2%
*“Definitely not as pure as advertised”*
**Quality-Overall**2%
*“Yes, its not cheap,”*
### **Top return reasons **
**Quality-Overall**33%
**Ingredients-Overall**33%
**Oily/Greasy**33%
## **Common questions**
- **Is c15 0 fatty acid supplement profitable to sell on Amazon United States?**
- The niche generates $520K/yr across 18 tracked products. 10 of 13 products launched in the last 360 days are still selling. 90-day search growth is +53.6%. Flapen's verdict: Worth a look (65/100).
- **How competitive is the c15 0 fatty acid supplement niche?**
- 16 brands and 36 sellers compete. The top 5 products take 66% of clicks and top 5 brands hold 66% of demand.
- **What do buyers complain about in c15 0 fatty acid supplement?**
- Top complaints mined from reviews: Value For Money, Dosage, Functionality-Overall. The return rate is 0.0%.
- **When does demand for c15 0 fatty acid supplement peak?**
- Demand peaks in Sep; the busiest month runs 2.5× the quietest.
- **What does it cost to enter the c15 0 fatty acid supplement niche?**
- Listings span $8.26–$140.77; the average listing price is $42.58 (sweet spot $15–$100). The average incumbent carries 924 reviews — the moat a new listing must climb.
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