---
title: "Propionyl-l-carnitine — $64K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/health-household/propionyl-l-carnitine"
last_updated: "2026-08-11T16:01:17.853Z"
locale: en
meta:
description: "Niche score 44/100 · $64K/yr market · 30K searches/yr · $28.50 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 44/100 · $64K/yr market · 30K searches/yr · $28.50 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Propionyl-l-carnitine — $64K/yr Amazon US Niche (2026) - Flapen"
---
# **propionyl-l-carnitine**
**Skip it**
A concentrated shelf (top 5 take 100% of clicks) — this niche doesn't clear our bar today.
Market size 16Growth 22Conversion 77Competition 0Returns 100Price range 95Avg price 95Brand share 0Review moat 82Quality gap 75
**Returns**
**Incredible****0.0%**
return rate — above 5% kills the launch gate
**Avg price**
**Incredible****$28.50**
avg listing price — sweet spot $15–$100
**Price range**
**Incredible****$22.89–$37.81**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Review moat**
**Great****367.25**
avg incumbent reviews — the moat a new listing must climb
**Conversion**
**Great****7.6%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Great****4.3★**
avg incumbent rating — lower means beatable quality
**Growth**
**Bad****-6.4%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****$64K**
$64K/yr · 30K searches
**Competition**
**Bad****100%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
According to Flapen's Amazon United States niche tracking, propionyl-l-carnitine is a $64K/yr Amazon United States market (30K searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Feb. Verdict: Skip it — 44/100.
Data updated Jul 10, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **propionyl-l-carnitine market data**
- **Units sold / yr**
- **3K–3K**
- avg 250–500/product
- **Revenue / yr**
- **$71K–$86K**
- units × avg price
- **Conversion rate**
- **7.6%**
- **Avg BSR**
- **#150**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **75%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **88 months**
- **Avg seller age**
- **183 days**
## **Competition & brand share**
The top 5 products capture 100% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**4 **▼falling
**Sellers**
**6**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**100%**
Top 20: 100%
**Open market**
**0%**
- Biolor65% - Life Extension17% - Swanson11% - VitaMonk6% - Open — no brand owns it (0%)
## **Demand & seasonality**
Weekly Amazon search volume, last 103 weeks — -6.4% search growth over the last 90 days.
1K750Black Friday '24Holiday '24Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Feb · busiest ÷ quietest = 2.0×
[**Open Trend **](https://flapen.com/research/us/health-household/propionyl-l-carnitine/trend)
## **Top propionyl-l-carnitine search terms**
- **propionyl-l-carnitine**19K/yr-10.2%7.4% conv. - **propionyl-l-carnitine for men**6K/yr-9.5%11.4% conv. - **propionyl l carnitine**3K/yr-7.3%9.0% conv. - **propionyl**2K/yr+84.3%1.9% conv. [**All search terms **](https://flapen.com/research/us/health-household/propionyl-l-carnitine/search-terms)
## **Top propionyl-l-carnitine 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%20%$13K40%$26K60%$39K80%$52K101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 4 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Biolor High Absorption Propionyl-L-Carnitine (PLCAR) No Artificial Fillers - Effective Propionyl L Carnitine HCL Supplement to Support Blood Circulation - 120 Capsules**Biolor**$37.81**4.5★965 rev](https://www.amazon.com/dp/B07NVC623M) [2**Life Extension Optimized Carnitine Three Forms of L-carnitine Promotes Heart & Brain Health Gluten Free Non-GMO Vegetarian 60 Capsules**Life Extension**$22.89**4.6★283 rev](https://www.amazon.com/dp/B0792NSRG3) [3**Swanson Propionyl L-Carnitine with Glycine - Natural Supplement Promoting Heart Health & Energy Support - May Support Muscle Strength & Endurance - (60 Veggie Capsules)**Swanson**$26.42**4.0★63 rev](https://www.amazon.com/dp/B07NCZP8N5) [4**VitaMonk GlycoTrax - High Absorption GPLC Supplement - No Artificial Fillers - GPLC Glycine Propionyl-L-Carnitine Capsules Supplements to Support Healthy Blood Flow - 60 Capsules**VitaMonk**$26.89**4.1★158 rev](https://www.amazon.com/dp/B01N4AI15W)
### **Newest**
by launch date
[**Biolor High Absorption Propionyl-L-Carnitine (PLCAR) No Artificial Fillers - Effective Propionyl L Carnitine HCL Supplement to Support Blood Circulation - 120 Capsules**Biolor**$37.81**965 rev7y ago](https://www.amazon.com/dp/B07NVC623M) [**Swanson Propionyl L-Carnitine with Glycine - Natural Supplement Promoting Heart Health & Energy Support - May Support Muscle Strength & Endurance - (60 Veggie Capsules)**Swanson**$26.42**63 rev7y ago](https://www.amazon.com/dp/B07NCZP8N5) [**Life Extension Optimized Carnitine Three Forms of L-carnitine Promotes Heart & Brain Health Gluten Free Non-GMO Vegetarian 60 Capsules**Life Extension**$22.89**283 rev8y ago](https://www.amazon.com/dp/B0792NSRG3) [**VitaMonk GlycoTrax - High Absorption GPLC Supplement - No Artificial Fillers - GPLC Glycine Propionyl-L-Carnitine Capsules Supplements to Support Healthy Blood Flow - 60 Capsules**VitaMonk**$26.89**158 rev9y ago](https://www.amazon.com/dp/B01N4AI15W)
### **Trending**
90-day click momentum
[**Swanson Propionyl L-Carnitine with Glycine - Natural Supplement Promoting Heart Health & Energy Support - May Support Muscle Strength & Endurance - (60 Veggie Capsules)**Swanson**$26.42**4.0★**▲ 48%**](https://www.amazon.com/dp/B07NCZP8N5) [**Life Extension Optimized Carnitine Three Forms of L-carnitine Promotes Heart & Brain Health Gluten Free Non-GMO Vegetarian 60 Capsules**Life Extension**$22.89**4.6★**▲ 13%**](https://www.amazon.com/dp/B0792NSRG3) [**Biolor High Absorption Propionyl-L-Carnitine (PLCAR) No Artificial Fillers - Effective Propionyl L Carnitine HCL Supplement to Support Blood Circulation - 120 Capsules**Biolor**$37.81**4.5★**— 6%**](https://www.amazon.com/dp/B07NVC623M) [**VitaMonk GlycoTrax - High Absorption GPLC Supplement - No Artificial Fillers - GPLC Glycine Propionyl-L-Carnitine Capsules Supplements to Support Healthy Blood Flow - 60 Capsules**VitaMonk**$26.89**4.1★**▼ 22%**](https://www.amazon.com/dp/B01N4AI15W)
## **What buyers say about propionyl-l-carnitine**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**38%
*“Quality product”*
**Energy Level**21%
*“It gives me more energy”*
**Advertised Vs Actual Product**17%
*“Exactly what I was expecting”*
**Muscle Pain Relief**8%
*“Exercise endurance has improved”*
**Vitamin**8%
*“Exceptional supplement”*
**Acid Regulator/Stomach Ache Relief**4%
*“No stomachache or headaches like with L-Argentine or L-Citrulline”*
**Ingredients-Overall**4%
*“This is the best product for Nitric Oxide production I have found so far”*
### **What buyers complain about **
**Color Fading/Discoloration**50%
*“Brown and rancid looking”*
**Smell**50%
*“the smell was rancid”*
## **Common questions**
- **Is propionyl-l-carnitine profitable to sell on Amazon United States?**
- The niche generates $64K/yr across 4 tracked products. 90-day search growth is -6.4%. Flapen's verdict: Skip it (44/100).
- **How competitive is the propionyl-l-carnitine niche?**
- 4 brands and 6 sellers compete. The top 5 products take 100% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in propionyl-l-carnitine?**
- Top complaints mined from reviews: Color Fading/Discoloration, Smell. The return rate is 0.0%.
- **When does demand for propionyl-l-carnitine peak?**
- Demand peaks in Feb; the busiest month runs 2.0× the quietest.
- **What does it cost to enter the propionyl-l-carnitine niche?**
- Listings span $22.89–$37.81; the average listing price is $28.50 (sweet spot $15–$100). The average incumbent carries 367 reviews — the moat a new listing must climb.
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